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

Trigonometry homework problems

  • hrach87
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Trig Identities: Solving for (3/5)cos2x + (3/5)sin2x

  • bobsmith76
  • · Replies 10 ·
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10

Further Premutation / Combination problem

  • kenny1999
  • · Replies 2 ·
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2

Solve 7^2x+3=7^x^2: Step-by-Step Guide

  • Mphisto
  • · Replies 5 ·
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5

Calculate Angular Velocity of 70cm Bicycle at 25km/hr

  • Daaniyaal
  • · Replies 2 ·
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2

Permutation and combination problems.

  • kenny1999
  • · Replies 5 ·
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5
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3

Is this statement true about mathematical propositions?

  • TruthIsBeauty
  • · Replies 6 ·
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6

Method of Moment Generating Function Help

  • wannabe92
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1

Joint Moment Generating Function Help

  • wannabe92
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3

What are the Solutions to a Complex Quadratic Equation?

  • naaa00
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12

How Do Parabolic Roads Drain Water?

  • darshanpatel
  • · Replies 17 ·
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17

Calculate x-intercept for f(x)

  • rollcast
  • · Replies 6 ·
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6

What is the first x value that satisfies x-3>0?

  • Cinitiator
  • · Replies 3 ·
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3

Solution to quadratic equation doesn't look right

  • hatelove
  • · Replies 5 ·
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5

Another Isosceles Triangle Problem

  • Bashyboy
  • · Replies 4 ·
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4

Need help with conic intersection algebra

  • Cacophony
  • · Replies 6 ·
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6

Mastering Logarithms: Simplifying Logarithmic Expressions

  • theintarnets
  • · Replies 15 ·
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15

Isosceles Triangle Geometry Problem

  • Bashyboy
  • · Replies 10 ·
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10

Answer: Estimate Murder Time from Temp & Air: 55°F

  • theintarnets
  • · Replies 1 ·
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1

Using trig to find solutions to a quintic

  • conorordan
  • · Replies 8 ·
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8

Probability to get a specific triangle

  • Pzi
  • · Replies 19 ·
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19

Solving an Odd Function with Periodicity

  • billy1024
  • · Replies 2 ·
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2

Complex Numbers identity help

  • lunds002
  • · Replies 5 ·
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5

Solving Polynomial Equations with Exponents of 40

  • heartyface
  • · Replies 5 ·
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5

Solve x & y: x2 + (√8)x*sin[(√2)xy] +2 = 0

  • kscplay
  • · Replies 10 ·
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10

Solving Permutations with Multiple Sets

  • taylor81792
  • · Replies 13 ·
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13

Finding the inverse of two functions

  • Tebow15
  • · Replies 2 ·
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2

Systems of Equations: Word Problem

  • S.R
  • · Replies 4 ·
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4

X^2 + 5x + 25/4 is a perfect square trinomial?

  • EricPowell
  • · Replies 3 ·
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3

Equilateral Triangle Side Lengths

  • Bashyboy
  • · Replies 2 ·
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2

What is the range of a rational function?

  • PrincePhoenix
  • · Replies 14 ·
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14

Write the trigonometric expression as an algebraic expression in u.

  • veganazi
  • · Replies 14 ·
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14

Proving image of intersection?

  • SithsNGiggles
  • · Replies 3 ·
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3

Calculating the Width of a Triangle at Position x

  • chris_avfc
  • · Replies 26 ·
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26

Abstract Algebra: Groups and Subgroups

  • taylor81792
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1
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9

Verify whether the statement is true.

  • maxtheminawes
  • · Replies 2 ·
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2

Tricky Trig Simplification, or so I think

  • lowry
  • · Replies 1 ·
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1

How to find the exact value of cos 67.5 ?

  • jkristia
  • · Replies 5 ·
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5

Poisson approximation distribution

  • drawar
  • · Replies 4 ·
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4

Can the Proof of a Statement be Improved: A Request for Assistance

  • athrun200
  • · Replies 1 ·
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1

Drawing a right triangle to simpliy the given expressions

  • Johnyi
  • · Replies 5 ·
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5

Seeking Confirmation On An Equation's Answer

  • Glynbeard
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1

Interval Notation for Set Intersection and Union

  • rudders93
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2

Setting functions equal to each other to cancel

  • getty102
  • · Replies 3 ·
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3

Quadrilaterals using Geometer's Sketchpad (Thumbnail Included)

  • luke8ball
  • · Replies 3 ·
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3

What is the probability of two seeds germinating if their types are unknown?

  • permorten
  • · Replies 1 ·
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1

How to Solve a Challenging Trig Equation with Identities?

  • kscplay
  • · Replies 5 ·
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5

Calculating a limit with tangent as denominator

  • Tebow15
  • · Replies 4 ·
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4

Is My Calculation of Electric Field Correct Using the Paint Document?

  • Miike012
  • · Replies 1 ·
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1

Factoring without quadradic formula

  • Tebow15
  • · Replies 1 ·
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1

Finding unknown given vector a,b and parallel

  • xplosiv3s
  • · Replies 6 ·
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6

Efficiently Calculate Radian Circles | Part B Explanation

  • synkk
  • · Replies 3 ·
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3
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18

Number Theory WOP: Find Smallest Integer of Form a - bk

  • dashhh
  • · Replies 4 ·
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4

Shifting a parabola vs changing slope of a line

  • LearninDaMath
  • · Replies 3 ·
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3

Solve Hard Trig Question: Cube <ACB Angle

  • HelloMotto
  • · Replies 12 ·
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12

Solving Matrix Equations: x = Cx + d to x = [(I - C)^(-1)]d

  • Cinitiator
  • · Replies 4 ·
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4

Solve Simple Trig Question: Sin x = √3 * Cos X

  • kscplay
  • · Replies 3 ·
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3

How do I add two numbers with exponents?

  • Instinctlol
  • · Replies 4 ·
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4

Probability Statistics Question

  • geforce
  • · Replies 19 ·
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19

Expected Value and Standard Deviation of A1 Computer's Rebate

  • geforce
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2

Dual geometry with 5 points question

  • snes_nerd
  • · Replies 1 ·
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1

Is g(x) Always Continuous if Sandwiched Between Two Continuous Functions?

  • Cacophony
  • · Replies 2 ·
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2

Help with continuity of functions

  • Cacophony
  • · Replies 2 ·
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2

Exact values of inverse-trig expressions

  • dobedobedo
  • · Replies 4 ·
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4
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3

Find the Area of the Parallelogram

  • Lurid
  • · Replies 2 ·
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2

Proving an Inequality: (1+a)q < q/(1-a) for a < 1 and Positive Real Numbers

  • grissom1988
  • · Replies 4 ·
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4

Algebraic Rate Problem: Finding Time for Bob to Reach Charlie

  • daigo
  • · Replies 3 ·
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3

Calculating Total Number of Live Viruses after 10 Seconds

  • johncena
  • · Replies 4 ·
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4

Solve for x, y and 4x in 4x+x+y=280^0

  • -Physician
  • · Replies 6 ·
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6

Y=e^xlna increases less quickly than y=e^x when a<e e. i. lna<1?

  • solve
  • · Replies 12 ·
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12

I can't find the log of a negative number

  • AllenHe
  • · Replies 1 ·
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1

Solve Algebra Rate Problem: Dragon Walking & Car Driving

  • daigo
  • · Replies 1 ·
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1

Remainder theorem question - combine divisor

  • tony24810
  • · Replies 14 ·
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14

Proving Binomial Theorem with Greatest Term and Coefficient Relationship

  • Quantum Mind
  • · Replies 2 ·
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2

Perpendicular vectors, triangle, tetrahedron

  • furor celtica
  • · Replies 13 ·
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13

How do you find the range of 1/{(x-1)(x+2)} for [0, 6]?

  • solve
  • · Replies 12 ·
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12

Prove that x is irrational unless it is an integer.

  • LaMantequilla
  • · Replies 2 ·
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2

How to solve a cubic equation with two variables and one constant

  • Spiralshell
  • · Replies 7 ·
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7

Not so basic algebraic fraction manipulation

  • namtip
  • · Replies 8 ·
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8

Need help finding the slope of a line for a triangle area problem?

  • mindauggas
  • · Replies 24 ·
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24

Y=X^1/2 is the same as Y=+/-sqrt(X) ?

  • solve
  • · Replies 4 ·
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4

Proving Nullspaces: Null(M) = Null((M^T)(M)) | Matrix Homework

  • Big-oh
  • · Replies 1 ·
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1

Binomial expansion of term with x^2

  • Roodles01
  • · Replies 4 ·
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4

Mastering Trigonometric Equations: Solving cos 2x-cos^2 x=0

  • lep11
  • · Replies 5 ·
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5

3^n+1 has an odd prime divisor

  • wsldam
  • · Replies 5 ·
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5

Compound Interest Formula and Natural Logarithms

  • Gothika
  • · Replies 5 ·
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5

Solving Inequality: |x-1|+|x-2|>1

  • solar nebula
  • · Replies 4 ·
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4

Geometry Triangle Congruence - Should be easy?

  • luke8ball
  • · Replies 3 ·
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3

How did this conversion took place ?

  • Sumedh
  • · Replies 5 ·
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5

Solve for a and b | Homework Help on Angles | 900 = a + b, a = b/14

  • -Physician
  • · Replies 3 ·
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3

Data Management: Premutations Problem With identical Items

  • gurjant
  • · Replies 1 ·
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1

Finding Binomial Co-efficient from pronumerals

  • ukee1593
  • · Replies 1 ·
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1

Ptolemy's Theorem and Cyclic Quadrilateral

  • brisk11228
  • · Replies 1 ·
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1

We're working with logarithms of base 3

  • tharock220
  • · Replies 1 ·
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1

Factoring polynomial through grouping

  • DPXJube
  • · Replies 1 ·
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1