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

Max Value of a_n: Find n for Maximum Value

  • Saitama
  • · Replies 29 ·
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29

Solving for a fixed point on an interval

  • ChickysPusss
  • · Replies 13 ·
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13

Is the Addition of These Three Binary Numbers Correct?

  • kidi3
  • · Replies 7 ·
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7

Finding the Value of m in a Complex Number Equation

  • Saitama
  • · Replies 4 ·
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4
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4

Probability Q: Show B^c Subset of A^c

  • GreenPrint
  • · Replies 8 ·
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8

Combinations of n objects taken r at a time

  • Justin12005
  • · Replies 1 ·
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1

Cramer's method for linear equations

  • lendav_rott
  • · Replies 7 ·
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7

Solving Probability Question: Empty Intersection Condition

  • GreenPrint
  • · Replies 8 ·
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8

Testing linear dependence of three vectors

  • doctordiddy
  • · Replies 2 ·
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2

Algebra problem on final step

  • Restless
  • · Replies 8 ·
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8

Calculating a Circle Through 3 Points - Equations and Confusion

  • zmonk85
  • · Replies 2 ·
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2

Partial Fractions: Solving 2x^2/(1-x(1+x))

  • trollcast
  • · Replies 11 ·
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11

Probability problem involving 4 Unions (inclusive OR)

  • CoinToss
  • · Replies 5 ·
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5

Equation of an ellipse given c and eccentricity.

  • bnosam
  • · Replies 5 ·
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5

Finding all 2x2 nilpotent matrices

  • brownman
  • · Replies 2 ·
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2

Word Trig Problem on Health/Medicine topic

  • Cold As Ice
  • · Replies 15 ·
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15

Is the Formula for the Probability of Symmetric Difference Accurate?

  • GreenPrint
  • · Replies 3 ·
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3

Solve for x 5/3 = 1/2(x^-1)(y)

  • 939
  • · Replies 7 ·
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7

Solving Inequality: Find Range of k for ##k\cos^2x-k\cos x+1≥0##

  • Saitama
  • · Replies 14 ·
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14

Optimization Problem(Linear Programming Model)

  • sigh1342
  • · Replies 3 ·
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3

AM-GM Inequality - Troubles with an example

  • Kolmin
  • · Replies 4 ·
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4

Coin Combinations: Solving Part a) and Questions for Part b)

  • Workout
  • · Replies 3 ·
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3

Understanding the Movement of a Unique Clock

  • hms.tech
  • · Replies 9 ·
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9

Help with Variance Homework - Find Mean & Probability

  • t.war13
  • · Replies 2 ·
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2

Symmetries of graphs/Graph theory

  • CAF123
  • · Replies 9 ·
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9
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2

Rotation on a Plane | Using Rotation Matrix and Point Rotation

  • lendav_rott
  • · Replies 3 ·
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3

Solve Algebra Homework: 7((45y+30)/14)+9y=225

  • 939
  • · Replies 6 ·
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6

Find the value of x1^6 +x2^6 of this quadratic equation without solving it

  • chloe1995
  • · Replies 4 ·
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4

Probability that bulb is defective questions

  • schapman22
  • · Replies 6 ·
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6

Probability question regarding independent events, where am I wrong ?

  • nishantve1
  • · Replies 2 ·
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2

Find the domain of this function

  • calif2a8
  • · Replies 3 ·
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3

A rather straight forward function question.

  • Dangshnizzle
  • · Replies 4 ·
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4

Logarithms in Systems of Equations

  • Mandelbroth
  • · Replies 1 ·
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1

What is the Transposition Problem for Algebra?

  • FaraDazed
  • · Replies 17 ·
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17

Logical Quantifiers: For all such that

  • mliuzzolino
  • · Replies 5 ·
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5

Sequence of numbers divisible by 7.

  • blunted
  • · Replies 3 ·
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3

How Do You Rearrange the Equation v = sqrt(2kt/m) to Solve for M?

  • jim the duke
  • · Replies 5 ·
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5

How Do You Solve an Exponential Inequality with Different Bases?

  • scientifico
  • · Replies 5 ·
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5

3 variables 3 equations (2 linear 1 quadratic)

  • Appleton
  • · Replies 4 ·
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4

How to solve a quadratic equation with a negative value for the variable?

  • peterpanhandle
  • · Replies 3 ·
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3

Possible Measures of Angle C in Triangle ABC with Given Equation

  • utkarshakash
  • · Replies 4 ·
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4

How do you calculate the Grand Variance?

  • nukeman
  • · Replies 16 ·
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16

Prove that the greatest angle is 120

  • utkarshakash
  • · Replies 6 ·
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6

Solving a System of Equations: Understanding F_B

  • jgreen520
  • · Replies 6 ·
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6

Angle Between Tangents Drawn to Ellipse 3x2+5y2=15 from (2,2)

  • Saitama
  • · Replies 7 ·
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7

Calculating Radioactive Decay of 18F Isotope in PET Scanners

  • hms.tech
  • · Replies 6 ·
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6

Solve Quadratic Equation for x1^2 + x2^2

  • blunted
  • · Replies 4 ·
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4

How to solve equations with mod?

  • Goldenwind
  • · Replies 4 ·
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4

Solving a Matrix with variables

  • brownman
  • · Replies 4 ·
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4

How Do Volume and Surface Area Scale in Flying Objects?

  • KEØM
  • · Replies 2 ·
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2

Inequalities with two different fractions which include x in the denominator.

  • TheAbsoluTurk
  • · Replies 19 ·
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19

Basic algebra: find break-even point

  • 939
  • · Replies 4 ·
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4

Cartesian equation of the plane

  • yy205001
  • · Replies 4 ·
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4

Solve Exponential Equation: 5^(sqrt(x)) + (1/5)^(sqrt(x)) = 25

  • scientifico
  • · Replies 1 ·
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1

How Do You Solve the Inequality 4x^4 + (√2y)^4 ≤ 64 with Respect to x?

  • christian0710
  • · Replies 9 ·
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9

Convert algorithm to a formula

  • mryoussef2012
  • · Replies 2 ·
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2

Solve for x logarithm question

  • Ascleipus
  • · Replies 7 ·
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7

It doesn't make sense to get negative

  • davedave
  • · Replies 4 ·
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4

Solve Linear Equation: Mother's Age w/ 2 Sons

  • blunted
  • · Replies 11 ·
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11

Finding Min Value: 2x^2-36x+175

  • Taylor_1989
  • · Replies 3 ·
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3

Tricky maths question. Find base of equation given solutions.

  • tigertan
  • · Replies 10 ·
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10

Finding Slope of a Tangent Line to a Parabola

  • Cascadian
  • · Replies 3 ·
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3

Ferris Wheel Problem: Find r, ω, Times for 80ft Height

  • Cascadian
  • · Replies 5 ·
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5

Solving a Quadratic Equation without the Standard Formula

  • supernova1203
  • · Replies 2 ·
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2

Proving Equality of Cubed Complex Numbers with Graphical Representation

  • redount2k9
  • · Replies 29 ·
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29

Vector Subtraction: Is it Commutative?

  • odolwa99
  • · Replies 3 ·
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3

Finding the limit without L'Hôpital's rule

  • Unredeemed
  • · Replies 2 ·
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2

Inverse trigonometry prove this

  • utkarshakash
  • · Replies 3 ·
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3

Can Functions f and g Exist Such That f(x)g(y) = x + y for All Real x, y?

  • thchian
  • · Replies 6 ·
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6

How Many Quadratic Equations Can Be Formed With Real Roots?

  • e.pramudita
  • · Replies 11 ·
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11

Why Am I Off by One in My Mathematics Olympiad Answer?

  • rajatgl16
  • · Replies 8 ·
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8

Area Under Curve: Find Intersection Points & Area

  • bonfire09
  • · Replies 2 ·
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2

Harbour Tides: Calculating Safe Docking Time for Cruise Ships

  • davedave
  • · Replies 6 ·
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6

How do I calculate DC motor speed for a given load?

  • dzlan
  • · Replies 1 ·
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1

Find the sum to infinite series

  • utkarshakash
  • · Replies 3 ·
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3

Inverse trigonometric equation

  • utkarshakash
  • · Replies 21 ·
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21

Prove that the equation is an identity. State any restrictions.

  • goracheski
  • · Replies 2 ·
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2

Prove: x\sqrt{1-x^2}+y\sqrt{1-y^2}+z\sqrt{1-z^2}=2xyz

  • utkarshakash
  • · Replies 4 ·
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4

Discover the Solution Set for sin^-1 x > cos^-1 x with Greatest Integer Function

  • utkarshakash
  • · Replies 3 ·
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3

Solving Complementary Sets: n(A U B)

  • blunted
  • · Replies 2 ·
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2

Probabilities of archers A and B hitting the bull's eye

  • jinhuit95
  • · Replies 19 ·
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19

Question about circle chord midpt locus

  • kurketom
  • · Replies 3 ·
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3

Calculating Passengers without Caps or Eye Glasses: 36 Bus Riders

  • blunted
  • · Replies 5 ·
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5

To prove that vectors (a + b)(a - b) = a^2 + b^2 iff

  • nishantve1
  • · Replies 7 ·
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7
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8

Is this equation correct for all values of x?

  • utkarshakash
  • · Replies 5 ·
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5

Find the locus of center of circle

  • utkarshakash
  • · Replies 17 ·
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17

What is the intersection of A and the union of B and C?

  • blunted
  • · Replies 3 ·
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3

Is There a Software That Converts Drawings into Mathematical Functions?

  • zaddyzad
  • · Replies 4 ·
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4

Summation question within complex numbers

  • jj364
  • · Replies 11 ·
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11
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8
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9

Find the equation of hyperbola

  • utkarshakash
  • · Replies 3 ·
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3
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4

Finding length of 3 sides of a triangle

  • mimi.janson
  • · Replies 14 ·
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14

Yet another tricky question on permutations and combinations

  • sankalpmittal
  • · Replies 7 ·
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7

How Do You Determine the Number of Solutions for sin(x) = |x|/10?

  • utkarshakash
  • · Replies 4 ·
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4

Trouble understanding range values

  • phospho
  • · Replies 2 ·
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2