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

Solving Linear Questions - Table Requirements

  • ineedhelp23
  • · Replies 2 ·
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2

Solving log₇(7x+8) = log₇(7x+3)

  • KatieLynn
  • · Replies 4 ·
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4

Is y=1/4x Linear? - Answer the Question

  • ineedhelp23
  • · Replies 2 ·
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2

Continuous compound interest problems with pert formula

  • KatieLynn
  • · Replies 2 ·
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2

How Do You Solve a Hyperbolic Function Using Natural Logs?

  • KatieLynn
  • · Replies 4 ·
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4

Solving the Ships P and Q Problem

  • mathsmathsmaths
  • · Replies 1 ·
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1

Is z - 1 a factor of z^5 - 5z^4 + 18z^3 - 50z^2 + 81z - 45?

  • JFonseka
  • · Replies 4 ·
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4

Probability of valve opening when closed and closed when opened

  • estado3
  • · Replies 3 ·
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3

Trig Identity problem (double angle formulas incl.)

  • Suzan
  • · Replies 4 ·
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4

Solving exponential equations by logs

  • KatieLynn
  • · Replies 3 ·
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3

Solving for the Inverse of Matrix A

  • t_n_p
  • · Replies 7 ·
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7
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1

Solving for sin(7.5) using half-angle formula

  • rum2563
  • · Replies 4 ·
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4

What is the Cost of Lifetime for an Exponentially Distributed Component?

  • roadrunner
  • · Replies 8 ·
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8

Simplifying a Trig Equation: Finding the Zeros

  • physstudent1
  • · Replies 4 ·
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4

Logarithmic Properties in Proving Equations

  • Sorry!
  • · Replies 5 ·
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5

Calculating Probability for a Discrete Random Variable

  • bethanyd
  • · Replies 5 ·
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5

Calculate the inverse of f(x) = x^3 = 3x^2 + 3x -1

  • mooneh
  • · Replies 4 ·
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4

How to Derive ((A>B)>A)>A Using Sentential Logic?

  • Cornelius
  • · Replies 1 ·
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1

How to Solve an Equation with Natural Logarithms?

  • beanryu
  • · Replies 2 ·
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2

Proving two sides of equation for triangles

  • rum2563
  • · Replies 5 ·
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5

Proving cos⁴(x) = 3/8 + (1/2)cos(2x) + (1/8)cos(4x)

  • rum2563
  • · Replies 12 ·
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12

Trig Identities and Double Angle Formulas

  • rum2563
  • · Replies 4 ·
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4

What is the Expansion of Binomials into a Series?

  • Jekertee
  • · Replies 2 ·
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2

What happens when you compose even and odd functions?

  • Firepanda
  • · Replies 1 ·
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1
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8

Solving for k and P0 from exponential equations

  • Destrio
  • · Replies 2 ·
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2

Probability of Getting Red/Blue Ball: 60%/40%

  • wintbrad
  • · Replies 4 ·
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4

How fast is the wagon going after moving 82.1 m up the hill?

  • missashley
  • · Replies 2 ·
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2

Solving Normal Curve Questions using z-scores

  • Aftermarth
  • · Replies 1 ·
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1
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6

Graphing f(x), -f(x), and f(-x) for square root functions

  • HelloMotto
  • · Replies 2 ·
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2

Eigenvalue/vector M^n=PD^nP^-1

  • Canadian
  • · Replies 2 ·
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2

TVM Problem solving the end amount.

  • cjp88
  • · Replies 1 ·
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1

Hazard to Density to Cumulative Distribution Function

  • estado3
  • · Replies 2 ·
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2

How Do You Calculate the Tension in a Pulley System?

  • missashley
  • · Replies 1 ·
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1

Do the limits of arctan(ne) approach π/2 and 0?

  • pivoxa15
  • · Replies 15 ·
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15

Displacement w/ vectors question

  • physics_wtf
  • · Replies 2 ·
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2

Finding sine and cosine formulas

  • rum2563
  • · Replies 6 ·
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6

Advanced Functions test question

  • Sorry!
  • · Replies 4 ·
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4

Solving functions algebraically (cube roots)

  • KatieLynn
  • · Replies 3 ·
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3

Solving Permutation Question: 6 Men, 3 Women

  • rock.freak667
  • · Replies 2 ·
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2

How to Simplify the Expression sin60° + sin20°?

  • rum2563
  • · Replies 6 ·
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6

Summation of Trignometric Series

  • Himanshu
  • · Replies 1 ·
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1

Finding the Ways to Put N Points on a Circle

  • ehrenfest
  • · Replies 1 ·
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1

Finding the Intersection of Two Planes using Vector Equations

  • PeterSK
  • · Replies 7 ·
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7

Triangle inequality for complex numers

  • pivoxa15
  • · Replies 5 ·
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5
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3

What is the amount of money (in Rs.) that Akbar has?

  • silver_chatgood
  • · Replies 6 ·
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6

Very simple proof of P(A) > P(B)

  • ChickenChakuro
  • · Replies 3 ·
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3

Proof That f(x) is 0 if Both Odd and Even

  • STAR3URY
  • · Replies 7 ·
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7

Finding range and inverse of f(x) = √[(8x² + 1)/(9 - 5x²)]

  • STAR3URY
  • · Replies 2 ·
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2

Functions, Mappings and Intervals.

  • qspeechc
  • · Replies 3 ·
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3

Interpreting instantaneous flow rate and total water flow

  • L²Cc
  • · Replies 3 ·
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3

Statistics (probability) problem

  • Lateral
  • · Replies 1 ·
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1

Calculating Distance to Make a Catch using Laws of Cosines

  • Flappy
  • · Replies 3 ·
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3

How to Prove the Equation for x=exp(t)?

  • cks
  • · Replies 15 ·
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15

Vandermonde Matrix - Solving a 3x3 Determinant Question

  • obiwan
  • · Replies 2 ·
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2

Leibniz notation in the product rule for derivatives

  • Pellefant
  • · Replies 11 ·
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11

How do I calculate the position of vector M?

  • devilsadv
  • · Replies 1 ·
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1

Weight of 7 ft Water Column w/ Radius 1.1m

  • missashley
  • · Replies 2 ·
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2

Simplify using Boolean algebra

  • king imran
  • · Replies 1 ·
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1

Find the length of a side of a cube

  • poohbear1986
  • · Replies 13 ·
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13

Graph transformations from y=1/x to y=(x+3)/(x+1) and y=2x/(x-1)

  • striker_77
  • · Replies 2 ·
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2

What is the domain, range, and asymptotes for these exponential functions?

  • striker_77
  • · Replies 6 ·
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6

Something in my brain has gone horribly wrong

  • Saladsamurai
  • · Replies 9 ·
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9

Proving x⁴-3x³+4x²-3x+1≥0 for all real x

  • Gib Z
  • · Replies 12 ·
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12

Are these trig identities correct?

  • rocomath
  • · Replies 3 ·
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3

If det(A) = 7, what is det(4A⁻¹) for a 3×3 matrix?

  • Vagrant
  • · Replies 1 ·
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1

Finding missing coefficients in x^4 + 2x^3 - 9x^2 - ax + b given two roots

  • Corkery
  • · Replies 13 ·
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13

Finding Max Volume of Cylinder with Fixed Total Area

  • Reshma
  • · Replies 3 ·
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3

Proving sin(x + pi/2) = cos(x)

  • ehrenfest
  • · Replies 3 ·
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3

Can e^3 be converted to a logarithmic function with a value of 0.0498?

  • shoook
  • · Replies 12 ·
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12

What is the Probability of Gender Combinations in a Family with Four Children?

  • NoPhysicsGenius
  • · Replies 2 ·
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2

Complex Roots: Solving for the Number and Identification

  • Corkery
  • · Replies 6 ·
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6

Finding the Determinant of a 2x2 Matrix

  • JFonseka
  • · Replies 7 ·
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7

Where did the identity matrices go in simplifying A = HG(FHG)^{-1}FG?

  • JFonseka
  • · Replies 2 ·
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2

Finding where |1 - x/sin(x)| = 0.01

  • MrXow
  • · Replies 5 ·
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5

Rounding this answer to the nearest tenth.

  • cjp88
  • · Replies 2 ·
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2

How Do You Simplify the Expression sec + csc / (1 + tan)?

  • PHK
  • · Replies 17 ·
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17

Solving Complex Roots: x^2 + 25 = 0

  • Corkery
  • · Replies 1 ·
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1

How Do You Solve Equations With Negative Exponents?

  • TbbZz
  • · Replies 7 ·
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7

Proving the Bisectors of a Quadrilateral Bisect Each Other

  • Gib Z
  • · Replies 3 ·
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3

Solving Matrix with Gaussian Elimination: Find Solutions

  • Firepanda
  • · Replies 3 ·
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3

Solving 6x^3 - 3x^2 - 45x Equation

  • Corkery
  • · Replies 3 ·
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3

Why is 0/0 Considered Undefined?

  • hashimcom
  • · Replies 24 ·
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24
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2

Solving Velocity Vectors on a Graph

  • roadrunner
  • · Replies 2 ·
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2

How Do You Solve This Complex Math Problem Step-by-Step?

  • kuahji
  • · Replies 1 ·
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1

How do I graph the absolute value function with multiple layers?

  • charm_quark
  • · Replies 2 ·
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2

How do calculators and MATLAB compute hyperbolic functions?

  • Firepanda
  • · Replies 10 ·
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10

Matrix, Prove of matrix theorem

  • nekteo
  • · Replies 4 ·
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4

Continuity of sqrt(x) at x = 0

  • bjgawp
  • · Replies 9 ·
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9

Selecting a 5-person committee from 6 men and 7 women

  • Diane Olive
  • · Replies 10 ·
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10

Finding q for a polynomial in 111...1 with digits all 1

  • Trail_Builder
  • · Replies 6 ·
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6

When is particle speed at least 5 m/s for v = 10t - t²?

  • fluffy91
  • · Replies 2 ·
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2

How to Calculate 3D Fillet Tangent Points and Center in Excel?

  • yoman
  • · Replies 1 ·
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1

Proof of Odd functions' Continuity

  • bjgawp
  • · Replies 2 ·
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2

Sigma Notation Problem: Evaluating a Series with n=5 and d=6

  • Vipul
  • · Replies 4 ·
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4

Statistics, Probability Distribution

  • kuahji
  • · Replies 3 ·
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3