Precalculus Mathematics Homework Help Forum

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Free pre-calculus mathematics homework help from qualified mentors. Math courses prior to calculus homework. Please use the template when requesting help and show your work.
Determine the set of odd primes ## p ##?
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Binary operation on equivalence classes
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3
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807
Find all possible solutions of x^3 + 2 = 0
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9
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967
Find all the solutions of the congruence
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6
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702
Show that ## p ## divides ## 2^{(p-1)/2}-1 ##
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1
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721
Proof of Inequality: Induction & Derivation Help
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12
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1K
Evaluate the Legendre symbol ## (999|823) ##
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3
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711
Finding the Distance to a Building with Trigonometry
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4
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1K
Finding the Volume of a Slightly non-Rectangular Box
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19
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What does the identity mean here?
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3
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588
Verify that ## A(225)\geq 1 ##
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1
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767
F(x)=(x+1)^0.5, h(x)=x^2+3, what is the range of f(h(x))?
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4
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873
Verify that ## L(1, \chi)\neq 0 ##
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4
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729
Evaluating several powers of ##x## from a given equation
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6
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871
Analysis of the mechanics of skydiving
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1
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681
How to construct a table of values for Dirichlet characters?
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18
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Show that (a-b) + (c-d) = -(b+d) - (-a-c)
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6
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755
What is the formula for finding the nth partial sum?
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15
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953
Master Factorization with Step-by-Step Guide for x^4 - 3x^2 - 4
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19
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1K
Calculate angle AEC and ADC
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8
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1K
Find the remainder when ## 823^{823} ## is divided by ## 11 ##
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14
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1K
Solve the given simultaneous equations that involves hyperbolas
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4
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738
Calculate the position vector for 3di
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1
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825
Question about vector coordinates
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4
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796
Inequality involving a reciprocal - where's the mistake?
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12
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995
Solve the simultaneous linear congruences
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4
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925
Conditional probability problem
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15
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985
Solving an inequality involving absolute values
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11
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1K
Solve the given permutation problem
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1
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810
Find the highest power of ## 3 ## dividing ## 823 ##
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9
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1K
Proving that the inverse of a rational number exists
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8
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1K
Prove the trigonometry identity and hence solve given problem
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5
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967
Set properties of even (##E##) and odd (##I##) integers
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5
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779
Find the length of PA - deductive Geometry
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1
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620
Help simplifying this algebraic expression please
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4
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776
Prove that ## li(x)\sim \frac{x}{\log x} ##.
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3
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902
Determine the day of the week on which you were born
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18
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1K
Graph Sin(2x+6): Is Parent Function the Best Option?
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6
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928
Find the constants ## A ## and ## B ##
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1
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824
Using this Libre Calc statement: =if(B4=50,100)
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3
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749
Prove that ## \sum_{n\leq x}\frac{\phi(n)}{\sqrt{n}}=Cx^{3/2}+.... ##.
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4
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969
Solving an equality with absolute values
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10
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932
How to find the constant B in here?
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7
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941
Prove that the altitudes of a triangle are concurrent
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3
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1K
Use Euler's summation formula to prove the following....
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17
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1K
Verify this result when ## n=10 ##
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8
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733
Apply trigonometric methods in solving problems
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1
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819
Checking My Understanding of the Naive Bayes Theorem
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1
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930
Solving trigonometry equation involving half-angle
2
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42
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2K
Prove that ## \sum_{d\mid n} f(d)=\sum_{d\mid n} f(\frac{n}{d}) ##.
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5
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788
Why does the dot product in this solution equal zero?
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3
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762
How to find out the sin value from cos
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9
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1K
Every S-composite can be expressed as a product of S-primes
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13
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1K
How can we prove the bac-cab rule using a geometrical derivation?
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7
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8K
Prove that ## \sum_{d\mid n}\sigma_{1}(d)\sigma_{1}(\frac{n}{d}) ##
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20
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Prove by the principle of induction
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14
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973
Find the probability that the shorter piece of a 20cm string is at least 8cm when the string is cut randomly
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2
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828
Problem set with 5 proofs involving odd, even, parity, etc.
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4
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812
Determine all integers ## n ##
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10
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800
Precise definition of tangent line to a curve
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18
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1K
Is the following true, for each positive integer ## k ##?
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19
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752
Use the Euclidean algorithm to find integers ## a, b, c ##
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5
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832
MHB True or False Question about Square Matrices
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1
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950
Prove that ## 4\mid \sigma_{1}(4k+3) ##
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5
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865
Determine (with proof) the set of all prime numbers
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3
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934
Determine all integers ## n ## for which ## \phi(n)=16 ##
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14
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1K
Prove that ## n ## must be a power of ## 2 ##
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15
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960
Find the values of a real number ##a## for an inequality to hold
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7
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879
Prove that ## 1^{p-1}+2^{p-1}+3^{p-1}+\dotsb +(p-1)^{p-1}\equiv -1 ##.
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1
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Establish that ## a\equiv b\pmod {p} ##
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8
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798
Prove that ## 1835^{1910}+1986^{2061}\equiv 0\pmod {7} ##
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19
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Rationalizing this fraction involving square roots
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3
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814
Probability of selecting two white balls from two bags
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2
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1K
Verify that ## x\equiv a^{p-2}b\pmod {p} ## is a solution
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6
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856
Solve the given trigonometry equation
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1
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692
Prove that ## a^{3}+1 ## is divisible by ## 7 ##.
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1
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801
Probability that A will win given a condition
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15
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917
Verify that ## a^{5} ## and ## a ## have the same units digit
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1
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1K
Show that ## 60 ## divides ## a^{4}+59 ##
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2
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811
Find the units digit of ## 3^{100} ## by the use of Fermat's theorem
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1
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970
Derive ## a^{7}\equiv a\pmod {42} ## for all ## a ##
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6
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1K
Pattern of variables with absolute value exponents
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6
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877
Derive the following congruence....
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3
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Show that ## 168=3\cdot 7\cdot 8 ## divides ## a^{6}-1 ##
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4
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843
Deduce that ## 13\mid (11^{12n+6}+1) ##
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2
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Show that ## 133\mid (a^{18}-b^{18}) ##.
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3
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710
Show that ## a^{12}\equiv 1\pmod {35} ##.
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1
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866
How do I manually stack photos for an equal average using given opacity levels?
2
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46
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2K
Verify that ## 17 ## divides ## 11^{104}+1 ##
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5
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961
Can we use criss-cross approach with complex number equations?
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9
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812
Understanding cot2(theta) = A-C / B
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8
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4K
Obtain the two incongruent solutions modulo 210 of the system
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7
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2K
Find the solutions of ## 7x+3y\equiv 6\pmod {11} ##.
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2
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868
Can this system of inequalities be solved for x?
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5
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747
Find the solutions of the following system of congruences
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2
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788
Obtain the eight incongruent solutions of the linear congruence
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2
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909
Find the solutions of the system of congruences
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1
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831
How to find all solutions of ## 3x-7y\equiv 11\pmod {13} ##?
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6
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1K
Is 2i + j + 3k the Normal Vector of Plane CDPQ?
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5
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894
Find an integer having the remainders ## 2, 3, 4, 5 ##.
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2
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786

Precalculus Homework Help

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