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

Probability of at least 5 consecutive heads in 10 coin flips

  • Biotic
  • · Replies 14 ·
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14

Infinite Geometric Sequence: How to Find the Number of Terms

  • Vince604
  • · Replies 6 ·
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6

Q: How to compute P(X=200 and Y<150)?

  • CAF123
  • · Replies 10 ·
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10

Evaluate 2log10 + log10(1/2 + 1/3) + 1/3log27

  • lionely
  • · Replies 3 ·
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3

Simplifying log(ab) - 2log(b) - 1

  • lionely
  • · Replies 12 ·
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12

Does cosine inverse follow the CAST rule?

  • chiuda
  • · Replies 4 ·
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4

If log₃m = n, how do I find log₃m⁴ in terms of n?

  • Aokei
  • · Replies 11 ·
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11

What is the Lower Bound of this Sequence?

  • sunnybrooke
  • · Replies 9 ·
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9

Converting Laplace transform to image and real parts

  • baby_1
  • · Replies 1 ·
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1

How do you solve ln x=1/2x-1/2?

  • johann1301
  • · Replies 3 ·
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3

Independent Poisson Processes Word Problem

  • Ocifer
  • · Replies 1 ·
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1

Easy exponential question-> 1/3(8)^(-2/3)

  • nukeman
  • · Replies 3 ·
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3

More Logarithims. Is my first method correct?

  • lionely
  • · Replies 7 ·
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7

Greatest integer function limit problem. Proving whether the limit exists

  • johnjrgs
  • · Replies 1 ·
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1

Given that log 2 3 = 1.585, find without using tables the

  • lionely
  • · Replies 17 ·
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17
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13

Find Sum of Arithmetic Series Sn: Σ 200 r=5 5r-2

  • Nubcake
  • · Replies 3 ·
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3

Isolating a variable when variable is in both sides of equation

  • Sn0man
  • · Replies 12 ·
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12

Why Does Tr(AB) Equal Tr(BA) for Matrices?

  • Bipolarity
  • · Replies 2 ·
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2

Proof of Divisibility of k|n Given Relatively Prime k,m

  • twoski
  • · Replies 10 ·
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10

How to solve a Network Analysis

  • baki
  • · Replies 1 ·
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1

What is the Sum of nth Roots of Unity and How Can It Be Proven?

  • converting1
  • · Replies 3 ·
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3
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11

How Do You Complete the Square for x2+y2=2x?

  • christian0710
  • · Replies 8 ·
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8
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3

Log2 of 41/2 = 1: Simplifying Logarithms in Simple Steps

  • lionely
  • · Replies 3 ·
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3

Is f(m, n) = (m - n, n) a Bijective Function and What is its Inverse?

  • twoski
  • · Replies 10 ·
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10

How to solve for theta for this trig question?

  • zeion
  • · Replies 12 ·
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12

What is the proof for the property ⌊−x⌋ = −⌈x⌉?

  • twoski
  • · Replies 5 ·
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5

How Do You Simplify the Expression 1/3π(2h/3)^2 * h into 4π/27 * h^3?

  • nukeman
  • · Replies 4 ·
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4

Solving Equations Using Trigonometric Identities

  • trulyfalse
  • · Replies 2 ·
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2

How Do You Solve This Complex Trigonometric Equation?

  • wngman510
  • · Replies 3 ·
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3

Isosceles hyperbola locus problem

  • dpesios
  • · Replies 6 ·
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6

Find an effeciant way to deduce the roots of the equatioon

  • engboysclub
  • · Replies 3 ·
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3
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2

How to make γ the subject of the formula? (logarithms involved)

  • Kelles
  • · Replies 2 ·
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2

Understanding Solutions to 2x=x2

  • christian0710
  • · Replies 6 ·
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6

Sound attenuation barrier height (trigonometry)

  • jhmz
  • · Replies 2 ·
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2

Why does isolating x from y=½x+½ give x=2y-1?

  • christian0710
  • · Replies 7 ·
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7

Piecewise function - create function from graph

  • DrOnline
  • · Replies 8 ·
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8

Logarithm equation with different base

  • songoku
  • · Replies 7 ·
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7

Strange right-arrow symbol ([itex]\mapsto[/itex]) in stochastic calculus.

  • operationsres
  • · Replies 1 ·
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1

Exponential Inequality Challenge: Simplify and Solve for x

  • songoku
  • · Replies 4 ·
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4

Solving log₃(3x-5) + log₁/₃(12) = 1-x

  • songoku
  • · Replies 17 ·
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17

Triple scalar product/coplanarity of

  • Bipolarity
  • · Replies 2 ·
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2

Find the steady-state temperature of the rod.

  • eunice064
  • · Replies 4 ·
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4

Financial mathematics-recurrence relations

  • 99butterfly
  • · Replies 1 ·
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1

Proving sin10° + sin80° = √2cos35° using sum formulas

  • odolwa99
  • · Replies 2 ·
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2

Showing AC equals BC for three points on intersecting lines

  • lionely
  • · Replies 12 ·
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12

Boolen alegbra simplification problem

  • Sadeq
  • · Replies 2 ·
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2

Is |a|<c possible when |a-b|<c-b?

  • Bipolarity
  • · Replies 6 ·
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6

Find positive integers a,b,n that satisfy this expression

  • sunnybrooke
  • · Replies 14 ·
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14

Counting problem involving anagrams

  • V0ODO0CH1LD
  • · Replies 7 ·
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7

Proving Double-Angle Formulae for Triangles | Helpful Proof Guide

  • odolwa99
  • · Replies 3 ·
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3

Trigonometry ( high school level )

  • sambarbarian
  • · Replies 9 ·
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9

Factoring polynomials in general

  • beaf123
  • · Replies 3 ·
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3

Using Finance Formulas to find the best value of houses

  • Niaboc67
  • · Replies 1 ·
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1

Constraint on a linear system?

  • bonfire09
  • · Replies 5 ·
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5

Finding domain, range and inverse of a quadratic function

  • bllnsr
  • · Replies 2 ·
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2

Solve log x^(log x) = 4 and log₃ x - log₂₇ x = 4/3

  • zaddyzad
  • · Replies 8 ·
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8

Roots of a third degree polynomial

  • V0ODO0CH1LD
  • · Replies 12 ·
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12

Find the value of this expression

  • utkarshakash
  • · Replies 5 ·
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5

Using two sums to find geometric sequence

  • DatGuy
  • · Replies 8 ·
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8

What Is the Probability of Drawing One White and One Green Marble?

  • nesan
  • · Replies 4 ·
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4

Finding the maximum of ab+bc+ca given a+2b+c=4

  • utkarshakash
  • · Replies 6 ·
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6

What is the equation for the line AB and the distance XY?

  • Peter G.
  • · Replies 4 ·
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4

Similar triangles. How does 4/6 turn into 2h/3 ?

  • nukeman
  • · Replies 6 ·
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6

Any way to simplify this fraction without a calculator?

  • hahaha158
  • · Replies 2 ·
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2

Prove sinθ/(1+cosθ) = (1-cosθ)/sinθ

  • KingKai
  • · Replies 6 ·
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6

Area as a function of side w/ relation to cost

  • EIGHTSIX7
  • · Replies 6 ·
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6

Proving the Double-Angle Formula for Tangent with Step-by-Step Solution

  • odolwa99
  • · Replies 3 ·
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3

Roots lying between the roots of a given equation

  • utkarshakash
  • · Replies 9 ·
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9

Finding a and b when roots form an increasing G.P

  • utkarshakash
  • · Replies 4 ·
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4

Using the generalized triangle inequality

  • scharl4
  • · Replies 5 ·
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5

Compound Angle Formula for Trig Functions

  • zycismia
  • · Replies 2 ·
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2

How to Calculate Probability of Getting Exactly 7 Heads?

  • CAF123
  • · Replies 9 ·
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9

Solve 2^{|x+2|}-|2^{x+1}-1|=2^{x+1}+1

  • utkarshakash
  • · Replies 1 ·
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1

Find the values of a for real and distinct roots

  • utkarshakash
  • · Replies 10 ·
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10

Proving (a+b)^2=a^2+2ab+b^2 in Fields

  • fastidious1
  • · Replies 5 ·
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5

Finding Solutions for z in z^2 = a + bi

  • Bubblegum
  • · Replies 3 ·
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3

Find Least Value of 'a' for Inequality 4^x-a2^x-a+3 to be Satisfied

  • utkarshakash
  • · Replies 9 ·
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9
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11

Sum of the squares of remainders

  • V0ODO0CH1LD
  • · Replies 4 ·
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4

Understanding Trig Problems: When Can You Divide by Cosα?

  • phospho
  • · Replies 4 ·
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4

Distance between two position vectors.

  • peripatein
  • · Replies 9 ·
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9

Algebraic vector problems (planes, cross products etc)

  • PedroB
  • · Replies 2 ·
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2

Why Is the Sign Incorrect in My Solution for Tan A?

  • odolwa99
  • · Replies 2 ·
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2

Number of combinations of marbles in a bag

  • moonbase
  • · Replies 5 ·
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5

Minimizing cloth area for a tent with rectangular sides and triangular gables

  • dobedobedo
  • · Replies 10 ·
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10

Hardly even understand problem statement.

  • V0ODO0CH1LD
  • · Replies 15 ·
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15

Maximum and minimum of x²+y² on the curve 2x³+3x²y+3xy²+2y³=1

  • dobedobedo
  • · Replies 1 ·
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1

Developing Recurrence Formula (Closed)

  • lovemake1
  • · Replies 5 ·
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5

Proving \tan A=2+\sqrt{3} using the identity \sin A=\sin(A+30^{\circ})"

  • odolwa99
  • · Replies 2 ·
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2

Roots of a fourth degree polynomial

  • V0ODO0CH1LD
  • · Replies 15 ·
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15

Calculating how fast distance changes between ships

  • hsd
  • · Replies 2 ·
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2

Number of elements for a given probability?

  • V0ODO0CH1LD
  • · Replies 8 ·
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8

Probability, Diagonals of a convex polygon

  • Saitama
  • · Replies 6 ·
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6

Prove this is divisible by 228 for any n

  • sunnybrooke
  • · Replies 2 ·
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2

Determine if Even or Odd: (x^2|x-1|)/(SQRT(x-1)^2)

  • Government$
  • · Replies 1 ·
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1

Probability dice roll questions

  • mtingt
  • · Replies 6 ·
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6