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

Determining if a function is odd or even

  • ainster31
  • · Replies 2 ·
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What is the minimum value of 'b' in the given equations?

  • utkarshakash
  • · Replies 9 ·
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9

Straight lines passing through fixed point

  • utkarshakash
  • · Replies 6 ·
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6

Applied Stochastic Processess?

  • ra_forever8
  • · Replies 1 ·
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1

Proving |x + y| ≥ |x| - |y| using Theorem 3 and the fact that |-y| = |y|

  • jimmyly
  • · Replies 21 ·
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21

Checking solutions - textbook wrong about roots?

  • BMW
  • · Replies 1 ·
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1

How to deal with INVERSE TANGENT?

  • bmed90
  • · Replies 3 ·
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3

Do Two Random Subsets of X Have the Same Number of Elements?

  • utkarshakash
  • · Replies 7 ·
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7

Probability question related to dice

  • utkarshakash
  • · Replies 13 ·
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13

Finding the Length of a Chord on a Circle

  • Dumbledore211
  • · Replies 9 ·
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9

What are the possible values of a for the least possible length of latus rectum?

  • utkarshakash
  • · Replies 4 ·
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4
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2

How is the area under the arch of y=sinx related to the unit circle?

  • Trav44
  • · Replies 3 ·
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3

Solve 2^3x=7^(x+1): Logarithms Solution

  • AbsoluteZer0
  • · Replies 3 ·
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3

Do units of a squared quantity use L^2 or stay as L?

  • SherlockOhms
  • · Replies 13 ·
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13

Triangle problem - Evaluating the given expression

  • Saitama
  • · Replies 11 ·
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11

Selecting squares from chessboard

  • utkarshakash
  • · Replies 1 ·
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1

Trigonometry - Cosec summation

  • Saitama
  • · Replies 6 ·
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6

Determining dimensions of a rectangle

  • neuro.akn
  • · Replies 22 ·
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22

Prove cl(int(cl(int(A))))=cl(int(A))

  • ArcanaNoir
  • · Replies 4 ·
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4

Finding centroid of rectangle and triangle without integration

  • Jbreezy
  • · Replies 7 ·
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7

Solving Trig Problems: Evaluate cos 300° and sin(-120°)

  • TheKracken
  • · Replies 3 ·
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3

Distance between two lines in R^3

  • SteveDC
  • · Replies 7 ·
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7

How to Find the Equation of a Circle with Given Points and Radius?

  • Dumbledore211
  • · Replies 3 ·
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3

How do these equations cancel?

  • noahsdev
  • · Replies 3 ·
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3

Simplifying cot(θ)sin(-θ) to a single trig function

  • TheKracken
  • · Replies 9 ·
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9

Discriminant of cubic equation in terms of coefficients

  • Dowland
  • · Replies 35 ·
2
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35

How to calculate magnitude of this function ?

  • lazyaditya
  • · Replies 2 ·
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2

Minimum and maximum values of the objective quantity?

  • musicgold
  • · Replies 4 ·
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4

Period of sin(e*x) + sin(pi*x)

  • besulzbach
  • · Replies 20 ·
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20

Evaluating an Inverse Trigonometric Function

  • thatguythere
  • · Replies 14 ·
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14

Combining logarithms with the product and quotient rules

  • AbsoluteZer0
  • · Replies 8 ·
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8

Ratios for 10% Solution: How to Calculate for 4oz/1gal Ratio

  • YoderIII
  • · Replies 2 ·
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2

Determining the period of a trigonometric function

  • ainster31
  • · Replies 5 ·
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5

Questions about Linear Combinations of Random Variables

  • ken15ken15
  • · Replies 4 ·
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4

Hypothesis test for proportion liking chocolate ice cream

  • BCCB
  • · Replies 8 ·
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8

Linear Algebra solution to a system of equations

  • csgirl504
  • · Replies 2 ·
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2

Logarithmic Derivative of 2^log2(x^2+1) with Base 2

  • huzzi.123
  • · Replies 7 ·
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7

Finding a Coefficient in an Expansion (n-j is negative?)

  • rakeru
  • · Replies 6 ·
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6

Why doesn't my factored form expand back to the original quadratic?

  • ainster31
  • · Replies 15 ·
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15

If p is prime, then its square root is irrational

  • kaos
  • · Replies 7 ·
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7

Solving logarithmic and exponential equations

  • Mootjeuh
  • · Replies 8 ·
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8

Finding terminal velocity of a falling ice pellet

  • JJBlaze
  • · Replies 2 ·
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2

How to Find Positive Integer Ordered Pairs for Binomial Coefficient Equation?

  • juantheron
  • · Replies 7 ·
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7

Factorising 12x² - 27y²

  • ryanuser
  • · Replies 11 ·
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11

Interpretation of an impulse graph

  • lovelyrwwr
  • · Replies 4 ·
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4

Change in gradient between two road lines with different slopes

  • tomtomtom1
  • · Replies 2 ·
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2

Without solving the equation, find the value of the roots

  • BOAS
  • · Replies 3 ·
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3

Direct Proof of gcd(a,b) Corollary: ax+by=d

  • Miike012
  • · Replies 1 ·
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1

Completely expand as a sum/difference of logs

  • lolilovepie
  • · Replies 5 ·
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5

Binomial theorem to evaluate limits?

  • applestrudle
  • · Replies 4 ·
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4

F(f(x))= (x^4)-4(x^2)+2, find f(x).

  • GreenTea09
  • · Replies 4 ·
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4

Why Are 0 and 4 Excluded from the Range in This Function?

  • coconut62
  • · Replies 1 ·
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1

Finding inverse functions when there is X^2+x

  • applestrudle
  • · Replies 5 ·
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5

How to solve log_10(x)^2 = 0

  • Pharrahnox
  • · Replies 7 ·
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7

Limits when there is a sine function?

  • applestrudle
  • · Replies 5 ·
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5

System of Equations: Unique Solution Conditions

  • emilieloops
  • · Replies 3 ·
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3

What is the proof for a^n > n for all natural numbers n and a >= 2?

  • synkk
  • · Replies 3 ·
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3

Determining the least possible degree of a polynomial function

  • fakecop
  • · Replies 16 ·
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16

Simplify Fraction with same term in Num and Dem, but.

  • zKarp
  • · Replies 5 ·
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5

Determine Big O of a function (Discrete math)

  • Miike012
  • · Replies 2 ·
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2

Finding all real solutions for sin θ = 1/2 and sin(7θ) = sin(5θ)

  • FaraDazed
  • · Replies 11 ·
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11

Checking if vectors (a,b,c) with a = 2b + 3c form a subspace of R³

  • csgirl504
  • · Replies 3 ·
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3

Algebraic Solution to a Puzzle

  • fishtail
  • · Replies 7 ·
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7

Vertically Stretched Spring w/ Hanging Mass.

  • rmiller70015
  • · Replies 1 ·
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1

Solving sinxcosx + (1/2)sin2x = 0.0392 for x

  • Magnawolf
  • · Replies 2 ·
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2

Solve x in Terms of c: 3x+cos 2x = c

  • GreenTea09
  • · Replies 3 ·
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3

No idea - solve log_a(x) defined only for 0<a<1 and a>1

  • Luxm
  • · Replies 4 ·
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4

Let a and b be real numbers with a < b.

  • setsofvectors
  • · Replies 14 ·
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14

How Many Unique 5 White and 5 Black Bead Necklaces Can Be Made?

  • jameshaley
  • · Replies 2 ·
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2

Nonlinear Equation: Solve x,y,z

  • dirk_mec1
  • · Replies 3 ·
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3

Finding the angle bisector between two lines

  • Wats
  • · Replies 3 ·
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3

GRE algebra problem where two methods give different answers

  • doubled
  • · Replies 3 ·
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3

Remainder Theorem Thinking Question

  • fakecop
  • · Replies 3 ·
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3

Probability of two heads given at least one head

  • phospho
  • · Replies 14 ·
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14

Area of a plane enclosed within a cube

  • ViolentCorpse
  • · Replies 6 ·
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6

Is this proof of infinitely many rational square roots valid?

  • kaos
  • · Replies 7 ·
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7

Boolean algebra prrof question

  • hallerman
  • · Replies 2 ·
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2

Finding real solutions of x³+6x²-8x+1

  • FaraDazed
  • · Replies 2 ·
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2

Proving Inequality using Arithmetic and Order Axioms

  • synkk
  • · Replies 4 ·
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4

Show that these numbers are irrational

  • kaos
  • · Replies 11 ·
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11

Prove Rational Numbers Have Midpoint: x,y ∈ Q

  • kaos
  • · Replies 5 ·
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5

Why is the total number of outcomes n^r for r passengers and n cars?

  • controlswhiz
  • · Replies 2 ·
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2

Summation problem (first N positive integers)

  • GeorgeCostanz
  • · Replies 4 ·
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4

What Is the Probability the Letter Came from London If 'ON' Is Visible?

  • utkarshakash
  • · Replies 6 ·
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6

Chance of B and C After Accident: 2/5, 3/5

  • utkarshakash
  • · Replies 1 ·
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1

Showing if f and g are bijective then so is g o f

  • bonfire09
  • · Replies 7 ·
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7

Solving x - |x - |x|| > 2

  • converting1
  • · Replies 5 ·
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5

Can a Natural Number Indivisible by 3 Have a Square Divisible by 3?

  • zoxee
  • · Replies 3 ·
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3
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10

How Many Nickels, Dimes, and Quarters Add Up to $15.85 from 100 Coins?

  • physics=world
  • · Replies 11 ·
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11

Solve log5(x-1) + log5(x-2) - log5(x+6) = 0

  • Acnhduy
  • · Replies 9 ·
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9

How to graph log₅2(x-3) = x

  • Acnhduy
  • · Replies 12 ·
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12

Squaring both sides of 1+A = (√(1-B))^(-1)

  • help please!
  • · Replies 5 ·
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5

Average Speed to and From a Place: Solved Equation

  • Tyrion101
  • · Replies 5 ·
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5

Spherical Coordinate System Interpretation

  • Zatman
  • · Replies 3 ·
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3

Can we calculate probabilities without assuming independence?

  • phospho
  • · Replies 2 ·
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2
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6

How to know when law of sines has two solutions without testing

  • 462chevelle
  • · Replies 9 ·
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9

Solving Exponential Equations with Fractions and Addition

  • OPSEC
  • · Replies 20 ·
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20