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

Some question about number theory

  • henry407
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2

Why is delta used in the equation for the discriminate?

  • vanmaiden
  • · Replies 6 ·
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6

Calculating Probability of Rain Over 24 Hours: Rain/Sun Chances & Scenarios

  • ArcanaNoir
  • · Replies 10 ·
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10

Prove that it is divisible by 8.

  • Michael_Light
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2

Quadratic equation, A.P. and G.P. related problem problem

  • Sumedh
  • · Replies 2 ·
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2

Help with perpendicular straight line equations

  • rkell48
  • · Replies 6 ·
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6

Problem of quadratic equation with two variables

  • Sumedh
  • · Replies 6 ·
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6

Quadratic and cubic equation -show that -(common roots)

  • Sumedh
  • · Replies 5 ·
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5

Solving G(f(x)) - Help and Answers

  • Deagonx
  • · Replies 12 ·
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12

Prove Series Product: 1+3^(-2^n) = 3/2(1-3^(-2^n+1))

  • mishrashubham
  • · Replies 12 ·
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12

Proving Sin and Cos Values of pi/6: Analytical Solutions

  • leitz
  • · Replies 4 ·
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4

Help with sigma notation where the top value is x?

  • rkell48
  • · Replies 3 ·
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3

Sigma Notation: Definition and Examples

  • bitttttor
  • · Replies 3 ·
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3

Inequality proof (Spivak 1.6-b)

  • carlosbgois
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2

Not sure how the answers were achieved in this graph

  • hyde2042
  • · Replies 2 ·
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2

Find the sum of a geometric progression

  • mindauggas
  • · Replies 10 ·
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10

Distance from point to a line proof

  • train449
  • · Replies 7 ·
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7

Converting Functions from x to y

  • ozone
  • · Replies 3 ·
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3

What the heck is this paragraph saying?

  • Miike012
  • · Replies 8 ·
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8

Calculating Loan Reduction Strategies Using Inflation and Salary Growth

  • tHeUnk0wn
  • · Replies 6 ·
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6

A problem on quadratic equations .

  • sankalpmittal
  • · Replies 33 ·
2
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33

Solve Max of sin(x) + sin(2x): Get Answer Now!

  • Constantinos
  • · Replies 2 ·
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2

How can I find two points where a function has the same tangent line?

  • naaa00
  • · Replies 20 ·
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20

Making the equation of a parabola

  • stonecoldgen
  • · Replies 8 ·
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8

Solve Set Theory Problem: 30 People, 7 Black Hair, 24 Right Handed

  • Ascleipus
  • · Replies 3 ·
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3

Series expansion of logarithmic function

  • seboastien
  • · Replies 5 ·
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5

Power series when variable is very large

  • seboastien
  • · Replies 1 ·
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1

Power series in real world situation

  • seboastien
  • · Replies 1 ·
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1

Proof of inverse trigonometric identities

  • seboastien
  • · Replies 3 ·
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3

Optimizing Eigenvalues of Matrices: A Creative Approach

  • elphin
  • · Replies 9 ·
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9

Multinomail Theorem on Wikipedia

  • Saitama
  • · Replies 18 ·
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18

How to Multiply Matrices I and Calculate the Inverse of Matrix B?

  • Peter G.
  • · Replies 4 ·
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4

Defining Polygons with Precision: A Review of Basic Polygon Terminology

  • Dembadon
  • · Replies 3 ·
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3

Tutoring Algebra: Basics & Fundamentals for Beginners

  • Miike012
  • · Replies 10 ·
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10

Trig Functions Periodicity: Which Function is Not Periodic?

  • Saitama
  • · Replies 78 ·
3
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78

How to Find Maximum and Minimum Values of Sin^4theta + Cos^4theta

  • hibernator
  • · Replies 2 ·
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2

Finding an equation of a parabola given three points.

  • starchild75
  • · Replies 16 ·
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16

Solving Arithmetic Progressions

  • nae99
  • · Replies 26 ·
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26

Proving the Trigonometric Identity: tanx + 1 = secx

  • minajo
  • · Replies 7 ·
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7

Help How can I find acute Angle theta?

  • krautkramer
  • · Replies 16 ·
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16

How to find the root of a quadratic formula

  • druuuuuuuunnk
  • · Replies 14 ·
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14

Difference Formula Involving Inverse Trgi Functions

  • x1nsanity
  • · Replies 7 ·
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7

Solving for x in logarithm problem

  • Sumedh
  • · Replies 6 ·
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6

Algebra II - Why Does sqrt(x+1/x+2)=(x+1)/sqrt(x)?

  • GreenPrint
  • · Replies 2 ·
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2

This always pisses me off. what is -X^n?

  • Curd
  • · Replies 2 ·
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2

Find Rectangle Sides Given Perimeter & Area

  • Government$
  • · Replies 10 ·
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10

There are 10 terms in the geometric progression.

  • nae99
  • · Replies 3 ·
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3

Solving sqrt(-8.3)sqrt(1 - i8): Tips and Tricks for Complex Numbers"

  • naspek
  • · Replies 3 ·
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3

Confirm that (x-2) is a Factor of x^3 - 2x^2 + x - 2

  • nae99
  • · Replies 7 ·
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7

From Red to Blue: A Scientific Investigation of Algebraic Transformations

  • Miike012
  • · Replies 15 ·
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15

Solving for unknown in arccos equation help?

  • calky117
  • · Replies 3 ·
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3

Triangle 90<x<135 such that B is tangent

  • undesirable10
  • · Replies 8 ·
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8

How do we factor a quadratic equation?

  • Miike012
  • · Replies 1 ·
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1

Is the term factorable in this Algebra problem?

  • Miike012
  • · Replies 5 ·
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5

Solving Chapter 3 Problems in "How to Prove It

  • mrwall-e
  • · Replies 6 ·
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6

Hi,I have:AX + X = B, all of them being matrices. I have the

  • Peter G.
  • · Replies 3 ·
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3
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5

If a day equals 1000 years, How much time is 1 hour

  • torisboy
  • · Replies 14 ·
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14
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3

How do I Find Vector b for comp_ab = 2?

  • 0range
  • · Replies 2 ·
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2

Trigonometric Half Angle Formula Explained and Applied

  • jrjack
  • · Replies 11 ·
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11

What is the solution for x in the equation (2^4x)(4^3x)=8x^(+42)?

  • ArcanaNoir
  • · Replies 5 ·
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5

Why does (3x-5)/(x^2+5x+8) = (3(2x+5))/(2(x^2+5x+8))-25/(2(x^2+5x+8))?

  • GreenPrint
  • · Replies 16 ·
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16

Another logarithm simplification exercise.

  • 0range
  • · Replies 4 ·
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4

Solve 2^(5x)=3^x(5^(x+3)) Logarithm Exercise

  • 0range
  • · Replies 4 ·
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4

Implied Dom/Ran = tan(2arcsin(x))

  • W0rr13d-0n3
  • · Replies 7 ·
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7

Why does cotangent inverse of 0 equal pi/2?

  • GreenPrint
  • · Replies 10 ·
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10

Proof of equality involving factorials

  • mindauggas
  • · Replies 24 ·
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24

Basic solving for variable question.

  • davie08
  • · Replies 10 ·
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10

What are the equations for finding common tangents between two curves?

  • labinojha
  • · Replies 1 ·
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1

Contradiction of Galios theory

  • footmath
  • · Replies 6 ·
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6

Incorrect proof for lim sin(1/x) at x=0

  • Harrisonized
  • · Replies 4 ·
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4

Why is slope represented as delta y over delta x?

  • vanmaiden
  • · Replies 5 ·
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5

Another variables question a little harder this time.

  • davie08
  • · Replies 6 ·
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6

Question on # of possible rearrangements given conditions

  • thelannonmonk
  • · Replies 2 ·
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2

Sigh, I don't understand why I am not getting a good solution

  • flyingpig
  • · Replies 14 ·
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14

Where to go from learning precalc and a bit of calculus?

  • mrwall-e
  • · Replies 2 ·
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2

A Cosine Law question involving angle of depression

  • Gracegao
  • · Replies 2 ·
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2

Least Squares solution and residuals

  • Mr_Orsum
  • · Replies 4 ·
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4
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3

Square root of a rational quantity: Algebra

  • Miike012
  • · Replies 1 ·
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1

Solving an equation with an absolute value within an absolute value

  • 5hassay
  • · Replies 13 ·
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13

Algebra - FOIL Bi/Tri nomials to the nth power

  • Miike012
  • · Replies 7 ·
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7

Solving Quadratic Functions: A Quick Guide

  • Nelo
  • · Replies 6 ·
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6

If (f o g)= 16x + 7 and g(x)= 2x - 1 , find f(x)

  • Andolph23
  • · Replies 4 ·
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4

Addition of exponentials, and relationship between variables.

  • Animastryfe
  • · Replies 3 ·
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3
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7

Equations with 2 Variables: Solving for 0<theta<2pi | Homework Help

  • Nelo
  • · Replies 17 ·
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17

Ive added an attachment and highlited the area that I have a question

  • Miike012
  • · Replies 2 ·
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2
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6
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14

Finding Number of Onto Functions | Set A & Set B

  • Vishalrox
  • · Replies 1 ·
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1
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2

Solving a Sin Equation: Find Value of cos6x-4cos4x+8cos2x

  • Saitama
  • · Replies 4 ·
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4

Inverse Function: Solving for y in 2(x-3)/y = 3

  • Nelo
  • · Replies 7 ·
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7

Simple algebra and square root help.

  • access
  • · Replies 3 ·
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3

What is the formula for finding tn in a sequence or series?

  • Nelo
  • · Replies 7 ·
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7

Exponent Laws Practice: Simplifying Fractional Exponents

  • Nelo
  • · Replies 3 ·
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3

Half angle formula , what is happening in these formulas

  • Jurrasic
  • · Replies 4 ·
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4

A difficult and tricky problem

  • agnibho
  • · Replies 2 ·
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2