Precalculus Mathematics Homework Help Forum

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.

Threads

What is the angle made by a line with the real axis, given certain conditions?

  • utkarshakash
  • · Replies 10 ·
Replies
10

Complex number equation and roots of unity

  • math_nuub
  • · Replies 6 ·
Replies
6

Quadratic equation solving with constraint.

  • qwerty11
  • · Replies 4 ·
Replies
4

Finding the Side-lengths of a Rectangle with Given Area Increase

  • paech
  • · Replies 2 ·
Replies
2

Domain and range of w(d) = 2d with maximum width 100 cm

  • EIGHTSIX7
  • · Replies 6 ·
Replies
6

Conditions for a function to be constant

  • V0ODO0CH1LD
  • · Replies 10 ·
Replies
10

Finding z-scores and grades using normal distribution

  • emKhairol
  • · Replies 2 ·
Replies
2

Inequality with two absolute values

  • paech
  • · Replies 2 ·
Replies
2

Is My Algebra Fraction Simplification Correct?

  • Taylor_1989
  • · Replies 2 ·
Replies
2

Proof of \sqrt{ab}>\frac{2ab}{a+b} for Positive and Unequal Integers

  • odolwa99
  • · Replies 8 ·
Replies
8

How can I rearrange this equation to find vo/vs?

  • NewtonianAlch
  • · Replies 4 ·
Replies
4

Condition for this polynomial to be a perfect square

  • utkarshakash
  • · Replies 2 ·
Replies
2

Surface area of solid of revolution (no calculus)

  • V0ODO0CH1LD
  • · Replies 5 ·
Replies
5

Vector perpendicular to only 1 vector

  • Ruzic
  • · Replies 4 ·
Replies
4

Solving a logarithmic equation.

  • thatguythere
  • · Replies 6 ·
Replies
6

Solve inequality involving modulus

  • utkarshakash
  • · Replies 3 ·
Replies
3

Natural log of a sum? (not sum of natural logs)

  • yiyopr
  • · Replies 1 ·
Replies
1

Inequalities find the set of values of x

  • synkk
  • · Replies 6 ·
Replies
6

Why is 0° not a solution for cosθ = 2sinθ - 1?

  • davon806
  • · Replies 5 ·
Replies
5

Optimizing ticket price for university girls soccer team raffle

  • sasuke07
  • · Replies 2 ·
Replies
2

What's the Correct Interpretation of |r| in Math?

  • phospho
  • · Replies 5 ·
Replies
5

Labelling sets in a Venn diagram

  • samirgaliz
  • · Replies 4 ·
Replies
4

What is the Limit of a Sequence with a Common Ratio of 1/2?

  • phospho
  • · Replies 13 ·
Replies
13

Algebraic graphing object flight paths

  • stobby
  • · Replies 1 ·
Replies
1

Solving 1/(x+4)>x-4 and 1/(x+7)>x-7

  • alewisGB
  • · Replies 6 ·
Replies
6

Is it right to condition a RV on dependent RV?

  • devonho
  • · Replies 1 ·
Replies
1

Solving a general complex trigonometric equation

  • omertech
  • · Replies 1 ·
Replies
1

How does 4 + 4sin(θ) factor to 4(1+sin(θ))?

  • vysero
  • · Replies 4 ·
Replies
4

Variance of Continous Random Variable

  • Lancelot59
  • · Replies 11 ·
Replies
11

How Do You Calculate Bacterial Growth Using Exponential Equations?

  • hsd
  • · Replies 1 ·
Replies
1

Probability Mass Function of a Discrete Non-Uniform Distribution

  • iTee
  • · Replies 8 ·
Replies
8

When solving x/(2x-1)<-2, do I flip the inequality sign?

  • odolwa99
  • · Replies 2 ·
Replies
2

Verifying (sin³(x)-cos³(x))/(sin(x)-cos(x)) = 1+sin(x)cos(x)

  • RAF1940
  • · Replies 2 ·
Replies
2

Conditional probability computation

  • Nero26
  • · Replies 2 ·
Replies
2

How can the solutions to a trig equation be determined?

  • MMCS
  • · Replies 2 ·
Replies
2

Linear Algebra - proof of transformation

  • NewtonianAlch
  • · Replies 3 ·
Replies
3

Solving Abstract Inequalities: Proving (a+b)(a-b) = 0 for Positive a and b

  • odolwa99
  • · Replies 4 ·
Replies
4

Calculating Monthly Deposits for Future Annuity Goal

  • Niaboc67
  • · Replies 2 ·
Replies
2

Test for coplanarity of four points

  • Nero26
  • · Replies 4 ·
Replies
4

Discontinous functions question.

  • peripatein
  • · Replies 10 ·
Replies
10

Rational function hole at (0, 0)?

  • Esoremada
  • · Replies 5 ·
Replies
5

Finance problem recursive formula

  • Niaboc67
  • · Replies 9 ·
Replies
9

Summation of a trigonometric series

  • fLambda
  • · Replies 10 ·
Replies
10

Flight of Bird, Cubic Function

  • CR7
  • · Replies 2 ·
Replies
2

Proving coplanarity of vectors from (a × b) × (c × d) = 0

  • Bipolarity
  • · Replies 2 ·
Replies
2

Solve Word Problem: Becky Had 216 Stamps

  • Taylor_1989
  • · Replies 4 ·
Replies
4

Conditional Probability and Drawing Cards

  • Sizwe
  • · Replies 3 ·
Replies
3

Finding mean and standard deviation from dice roll simulation data

  • iRaid
  • · Replies 13 ·
Replies
13

What Is the Probability A Rolls a Winning Sum in Dice Game?

  • CAF123
  • · Replies 13 ·
Replies
13

Solving the Conundrum of Three Positive Integers

  • aaronstonedd
  • · Replies 7 ·
Replies
7
Replies
2

Can Absolute Value Inequalities Prove This Expression?

  • Andrax
  • · Replies 1 ·
Replies
1

Prove this inequality for all triangles

  • sharpycasio
  • · Replies 8 ·
Replies
8

Why is √(x^2)/x not equal to sin(x)?

  • Albeaver89
  • · Replies 9 ·
Replies
9

Is E a subset of ]0,2] and how does it relate to ]0,2]?

  • Andrax
  • · Replies 10 ·
Replies
10

Fastest way to determine if a circle fully covers a rectangle

  • sciwizeh
  • · Replies 4 ·
Replies
4

How Do You Solve Challenging Homework Problem #3?

  • zzinfinity
  • · Replies 9 ·
Replies
9
Replies
5

How Does Compounded Interest Affect My CD Investment Over Three Years?

  • Niaboc67
  • · Replies 2 ·
Replies
2

How Do You Solve Nested Absolute Value Equations?

  • HerroFish
  • · Replies 3 ·
Replies
3

How should I take precalculus notes for speed and problem-solving?

  • Spiralshell
  • · Replies 2 ·
Replies
2

Solving for an indicated variable

  • vrfulgen
  • · Replies 1 ·
Replies
1
Replies
9

Equivalence of Vector Statements: Proofs and Solutions

  • Bipolarity
  • · Replies 1 ·
Replies
1

Conditional Probability on type of coin

  • CAF123
  • · Replies 8 ·
Replies
8

What is the smallest natural number n for a^(3n)=a (mod 85)?

  • papacy
  • · Replies 3 ·
Replies
3

Z^3-1=0 (express using de moivres theorum)

  • Daaniyaal
  • · Replies 10 ·
Replies
10

Finding the limit of (2^x - 1)/x

  • Gploony
  • · Replies 1 ·
Replies
1

Graphical solution to an equation relating tan(x) to a semi semi circle

  • Jayman123
  • · Replies 1 ·
Replies
1

How Do You Solve These Logarithm Equations?

  • Kjos
  • · Replies 10 ·
Replies
10

Why do absolute values appear in the simplification of square roots?

  • Rably
  • · Replies 6 ·
Replies
6

Can Properties of Sigma Notation Prove Equivalence of Two Sums?

  • songoku
  • · Replies 10 ·
Replies
10

Complements of Ranges and Domains

  • Kolmogorov
  • · Replies 5 ·
Replies
5

How to solve this inequality involving a 4th root?

  • PhizKid
  • · Replies 2 ·
Replies
2

Simplifying the following function

  • CoinToss
  • · Replies 1 ·
Replies
1
Replies
2

Using induction technique in mathematical logic

  • Kolmin
  • · Replies 3 ·
Replies
3

What is the Value of a Complex Exponential Expression?

  • sambarbarian
  • · Replies 11 ·
Replies
11

Solving a Polynomial with Real Coefficients and Real Zeroes

  • utkarshakash
  • · Replies 9 ·
Replies
9

What Is the Chance a Bookstore Raffle Winner Is Among the First 10 Customers?

  • chris_0101
  • · Replies 1 ·
Replies
1

Equations Involving Radicals Question

  • HerroFish
  • · Replies 8 ·
Replies
8

Twin primes where p+1 is a triangular number

  • papacy
  • · Replies 1 ·
Replies
1

Find length of sides of quadrilateral; write equation

  • David Dudek
  • · Replies 3 ·
Replies
3

Number of points having integral coordinates

  • utkarshakash
  • · Replies 2 ·
Replies
2

Is A subset of B in this proof involving sets and integers?

  • Andrax
  • · Replies 1 ·
Replies
1

Difference Quotient - average rate of change

  • zebra1707
  • · Replies 12 ·
Replies
12

Finding the period of a satellite orbit from a sinusoidal function

  • zaddyzad
  • · Replies 6 ·
Replies
6

Proving a trigonometric identity with sin and cos

  • Feodalherren
  • · Replies 7 ·
Replies
7

Is Playing a Card Game with Ascending Order Wins a Good Bet?

  • boggled
  • · Replies 5 ·
Replies
5

Evaluate 1-2cos^2 25/1-2sin^2 65

  • lionely
  • · Replies 3 ·
Replies
3

What is the probability that it will be on time all five times

  • lovemake1
  • · Replies 4 ·
Replies
4

Determining the second order polynomial from the intersection points

  • Cinitiator
  • · Replies 4 ·
Replies
4

How Can Double-Angle Identities Simplify Trigonometric Equations?

  • MaoRaygo
  • · Replies 1 ·
Replies
1

Operation on Equivalent Classes

  • dpa
  • · Replies 2 ·
Replies
2

Wilson Theorem: Solving (p-n+1) . (p-2)! + n–1 =0 (mod p)

  • papacy
  • · Replies 2 ·
Replies
2

What does this equation mean? [Exponentials]

  • Cee
  • · Replies 2 ·
Replies
2

Trigonometric Equation: Solving Sin 2x = -2cos x in the Interval 0 ≤ x < 2∏

  • Feodalherren
  • · Replies 4 ·
Replies
4

Find the range of this expression

  • utkarshakash
  • · Replies 7 ·
Replies
7

Misbehaving Imaginary Fractions

  • a.powell
  • · Replies 3 ·
Replies
3

Remainder when 2^256 is divided by 17

  • sambarbarian
  • · Replies 11 ·
Replies
11