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

Find equation of plane given conditions

  • Mr Davis 97
  • · Replies 2 ·
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2

Calculating events from phrasal expressions

  • Sollicitans
  • · Replies 7 ·
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7

Interval notation of function's domain question

  • late347
  • · Replies 1 ·
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1

Finding a Function Given a Condition

  • Bashyboy
  • · Replies 7 ·
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7

State the exact values of all the trigonometric rations for theta.

  • Giu1iano
  • · Replies 12 ·
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12

Fill three gaps with odd numbers 1-15 to sum to 30

  • Deebu R
  • · Replies 6 ·
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6

Solving x² - y² = 16 for x

  • sobergeek23
  • · Replies 36 ·
2
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36

Solving for ##\theta## in a Complex Grinding Problem

  • Herman Trivilino
  • · Replies 8 ·
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8

Multiple exponents for logarithms

  • kolleamm
  • · Replies 7 ·
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7

Find ground speed and direction of airplane

  • Grey_Thunderhead
  • · Replies 6 ·
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6

How to Solve (a+bi)/(x-i)=0 to Find X?

  • Wi_N
  • · Replies 15 ·
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15

Find the modulus and argument of a complex number

  • javii
  • · Replies 2 ·
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2

Finding the four fourth roots of -80i using De Moivre's theorem

  • Wi_N
  • · Replies 18 ·
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18

Solving Complex Quadratic Equations with Imaginary Coefficients

  • Wi_N
  • · Replies 8 ·
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8

Finding f(2) when f(xy) = f(x) + f(y) and f(16) = 16

  • Arman777
  • · Replies 20 ·
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20

Finding the Constant for Cancellation in Polynomial Factoring

  • late347
  • · Replies 7 ·
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7

Values of c for real roots of 2x² - 8x + 5 = c

  • Tyler Smith
  • · Replies 10 ·
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10

If p divides ab, does p divide a or b?

  • mephillip
  • · Replies 10 ·
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10

Why is chi square expected frequency (row sum × column sum)/total?

  • Faiq
  • · Replies 5 ·
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5

Why (a log x = b log x / b log a)?

  • Stoney Pete
  • · Replies 11 ·
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11

How do I prove (sec x+1)/sin 2x = tan x/(2cos x-2cos 2x)?

  • Schaus
  • · Replies 10 ·
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10

Factor 30(a²+b²+c²+d²)+68ab-75ac-156ad-61bc-100bd+87cd

  • paulmdrdo
  • · Replies 10 ·
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10

Help with algebraic deduction steps in a proof by induction

  • UsableThought
  • · Replies 9 ·
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9
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7

Prove that 1/(n+1) + 1/(n+2) + ... + 1/(2n) > 13/24

  • songoku
  • · Replies 5 ·
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5
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15

How do I factor out negative signs in equations?

  • sobergeek23
  • · Replies 5 ·
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5

Binomial Theorem - Determine n

  • Schaus
  • · Replies 4 ·
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4

How Do We Simplify and Interpret the Expression e^(ln(4)/2)?

  • late347
  • · Replies 3 ·
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3

Factoring a four term polynomial

  • Quadrat
  • · Replies 11 ·
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11

Remainder factor theorem: me reason this out

  • Terrell
  • · Replies 33 ·
2
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33

Prove: polynomial is uniquely defined by three of its values

  • CynicusRex
  • · Replies 2 ·
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2

Why is -1^0 = -1 while (-1)^0 = 1

  • ryan001
  • · Replies 14 ·
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14

Solving a 3rd Degree Polynomial: What are the Options?

  • fishturtle1
  • · Replies 10 ·
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10

What Is the Range of \( y = \sqrt{\ln(\cos(\sin(x)))} \)?

  • Buffu
  • · Replies 16 ·
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16

Continuous uniform distribution function

  • theone
  • · Replies 7 ·
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7

How Do You Solve This Composite Function Problem?

  • songoku
  • · Replies 3 ·
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3

Find vector parallel to two planes

  • Bestphysics112
  • · Replies 3 ·
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3

Proof of the total probability rule for expected value?

  • theone
  • · Replies 7 ·
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7

Can zigzag carbon nanotubes be expressed as a mathematical vector?

  • tomwilliam
  • · Replies 1 ·
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1

Finding the angle between AC and horizontal for a rotating lamina

  • Kajan thana
  • · Replies 5 ·
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5

Confusion with how to make an augmented matrix

  • John004
  • · Replies 2 ·
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2

When are Negative Bases Raised to Rational Powers Undefined?

  • Saturnine Zero
  • · Replies 7 ·
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7

Bi-geometrical mean using logs -- don't get the same result

  • ducmod
  • · Replies 7 ·
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7

All other ratios from just a small set

  • caters
  • · Replies 8 ·
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8

Analytical Geometry (Division of line segments)

  • at94official
  • · Replies 1 ·
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1

Proof Check: Geometry AB=EF If A=/B

  • Loststudent22
  • · Replies 1 ·
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1

Sketch the surface of a paraboloid

  • CricK0es
  • · Replies 5 ·
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5

State the trichotomy law formally

  • mr_persistance
  • · Replies 6 ·
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6

A question involving inequality

  • Faiq
  • · Replies 4 ·
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4

Why does the Sin of 0.036 degrees approximately equal 2 pi?

  • csmyth3025
  • · Replies 17 ·
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17
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4

Complex numbers De Moivre's theorem

  • iDimension
  • · Replies 3 ·
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3

Permutations with possibly repeating letters

  • poonintoon
  • · Replies 4 ·
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4

Show no natural numbers satisfy y^5 + 1 = (x^7-1)/(x-1)

  • Faiq
  • · Replies 33 ·
2
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33

How Can Trig Double Angle Formulas Simplify This Function?

  • TogoPogo
  • · Replies 7 ·
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7

Logarithm question using compound interest formula

  • Schaus
  • · Replies 4 ·
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4

What Are the Loci for Different Values of Lambda in a Complex Equation?

  • Alettix
  • · Replies 14 ·
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14

Math puzzle: combinations of digits

  • Logger
  • · Replies 5 ·
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5

Point inside a tetrahedron with vectors

  • Alettix
  • · Replies 9 ·
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9

Solve for salary given averages of other salaries

  • Mindscrape
  • · Replies 1 ·
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1

Representing a transformation with a matrix

  • MickeyBlue
  • · Replies 8 ·
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8

Prove x^n+1/x^n is an integer using induction

  • CynicusRex
  • · Replies 6 ·
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6

Probability of getting a seat in the train car

  • bznm
  • · Replies 9 ·
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9

Solving Basic Probability Homework: Can't Understand Solution

  • Clara Chung
  • · Replies 6 ·
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6

Using Remainder Theorem to find remainder

  • Schaus
  • · Replies 6 ·
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6

Analyzing and Sketching Function: xy^2-x^2y+x+y=2 | Help with Homework Problem

  • Taylor_1989
  • · Replies 6 ·
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6

Analyse and sketch the given function

  • Taylor_1989
  • · Replies 9 ·
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9

How to Solve a Polynomial Function with Complex Zeros?

  • doktorwho
  • · Replies 11 ·
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11

Complex Conjugates in Quadratic Equations: Solving for z

  • cragar
  • · Replies 5 ·
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5

Complex Numbers Problem Solution Attempt

  • Keiner Nichts
  • · Replies 2 ·
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2

Graphing y = (2x-6)/(x²-5x+4) with asymptotes and intercepts

  • Schaus
  • · Replies 21 ·
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21

Linear independence of Av₁,...,Avₖ when A has trivial null space

  • Mark53
  • · Replies 17 ·
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17

How do I solve number 3b and c

  • mykayleighn
  • · Replies 2 ·
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2
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9

What's the Error in Solving Radical Equations?

  • Schaus
  • · Replies 3 ·
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3

Harmonic mean: car trip mean velocity

  • CynicusRex
  • · Replies 4 ·
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4

If x+(1/x) = 7. Compute x²+(1/x²) and x³+(1/x³)

  • CynicusRex
  • · Replies 14 ·
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14

Neighbor fractions from Gelfand's Algebra problem 42

  • UsableThought
  • · Replies 11 ·
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11

Graph the solution set for |z+i|/z| < 1

  • TheChemist_
  • · Replies 7 ·
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7

Probability of 2 people meeting at given times

  • pugtm
  • · Replies 2 ·
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2

Using matrices for functions -- transformations and translation

  • Taylor_1989
  • · Replies 13 ·
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13
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7

Finding the check amount when cashier swaps dollars and cents

  • musicgold
  • · Replies 13 ·
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13
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7

Formula for Multiplying Two Elements in a Polynomial Ring

  • Bashyboy
  • · Replies 2 ·
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2

Not understanding this series representation

  • Kyle Nemeth
  • · Replies 8 ·
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8

Finding sum of infinite series

  • Ryaners
  • · Replies 14 ·
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14

Can you solve this quartic equation without actually solving it?

  • giokrutoi
  • · Replies 21 ·
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21

Finding the Center and Radius of a Circle with Complex Numbers and Loci

  • Kajan thana
  • · Replies 6 ·
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6

2017 times a is a natural number

  • giokrutoi
  • · Replies 5 ·
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5

Given f(N) as digital signal, find f(2N -1)

  • jaus tail
  • · Replies 2 ·
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2

Total displacement using vector diagram

  • Muhammad Khalid Khan
  • · Replies 3 ·
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3

Formula for Total Surface Area

  • zak100
  • · Replies 18 ·
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18

Whats wrong with this calculation?

  • zak100
  • · Replies 3 ·
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3

Why Is Sin(theta) Squared in This Mechanical Engineering Problem?

  • Turborrado
  • · Replies 6 ·
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6

How do I parameterize these surfaces?

  • Sho Kano
  • · Replies 3 ·
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3

Perimeter/Area of Shaded Region within a Circle

  • zak100
  • · Replies 10 ·
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10

Show that 5√(x² + 1) ≥ 3x + 4 for all x

  • Dank2
  • · Replies 3 ·
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3

Calculating Probability using the Poisson Distribution

  • sol59
  • · Replies 35 ·
2
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35