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

Diophantine Equation(Example Run-Through)

  • PolyFX
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3

How can I expand sin(x + y) + sin(x - y) to get 2sinxcosy?

  • bubblygum
  • · Replies 3 ·
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3

Using double angles to find value of

  • aeromat
  • · Replies 7 ·
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7

Multiplying Radicals with FOIL Method

  • zelda1850
  • · Replies 13 ·
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13

Yet another limit question in this forum (No.2 :P)

  • Ballox
  • · Replies 8 ·
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8

Simplify Radicals: -3\sqrt[6]{3}, 2\sqrt[3]{192}, \sqrt[6]{320} and More!

  • zelda1850
  • · Replies 4 ·
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4

Trig Functions - When wil object be 9cm below 0?

  • TN17
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1

Proving Existence of Positive Integer Multiple with 0s & 1s

  • whiteman
  • · Replies 6 ·
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6

Simple trig which I have forgotten

  • NOP90
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4

Divisibility Proof: Prove n^7 - n Divisible by 7

  • tysonk
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5

Perimeter & Area: Which Structure Has Largest/Smallest?

  • paul.redgate
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1

Proving Trig Identity: Tanx = Csc2x - Cot2x | Homework Help

  • bubblygum
  • · Replies 6 ·
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6

Measuring Parabolas of a Suspension Bridge - Alex

  • RepoMan
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3

Limit Problem Solution Explained

  • joshiemen
  • · Replies 5 ·
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5

Radical probelm can someone please check my answers?

  • zelda1850
  • · Replies 4 ·
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4

Rearranging Equations to Find x in Terms of a and b | Homework Help

  • Bugsy23
  • · Replies 4 ·
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4

Retrieving exact value using Compound angle

  • aeromat
  • · Replies 5 ·
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5

Solve for y: Determining the Measure of Angle y

  • zeion
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1

Descriptive Statistics - Find % of measurement in a certain range

  • oceanwalk
  • · Replies 2 ·
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2

Is (1-Exp[-i x])^2 equal to Sin^2(x) in particle physics?

  • y35dp
  • · Replies 4 ·
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4

Calculating the Value of an Infinite Series

  • tommyhakinen
  • · Replies 2 ·
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2

What is a Lattice Point in Geometry?

  • mateomy
  • · Replies 2 ·
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2

Maximizing Efficiency in Two-Dimensional Packing: A Comprehensive Guide

  • AlchemistK
  • · Replies 1 ·
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1

Understanding compund angle formulas

  • zeion
  • · Replies 4 ·
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4
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4

Automatic Control Systems Homework Proof on Linear Algebra

  • bcilek
  • · Replies 1 ·
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1

Function of distance between a point and vector in 3D

  • Rosengrip
  • · Replies 1 ·
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1

Solving a Quadratic Equation: A Puzzling Problem

  • Mastiff_Lover
  • · Replies 15 ·
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15

How to Find the Exact Values of Cosine and Sine of Compound Angles

  • zeion
  • · Replies 2 ·
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2

Easy Problems, but just cant figure it out Help

  • mlsbbe
  • · Replies 5 ·
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5

Is the Original Figure Considered a Shape in This Puzzle?

  • jjs789
  • · Replies 10 ·
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10

Binomial theorem - not an easy question

  • renvox
  • · Replies 7 ·
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7

Range of A for Real Roots of Ay2 - 3y + 4 = 0

  • mwhowell
  • · Replies 10 ·
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10

Troubleshooting Attached File: Solutions Here

  • Thenervemann
  • · Replies 1 ·
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1

Orbital Velocity Homework: Find Velocity of Geostationary Satellite

  • zeion
  • · Replies 13 ·
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13

Yet another limit question in this forum.

  • Ballox
  • · Replies 6 ·
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6

Achiles and a tortoise (not Zeno's Paradox)

  • Avathacis
  • · Replies 18 ·
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18

Common log question (are you done?)

  • Edin_Dzeko
  • · Replies 6 ·
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6

Solving Trig Equation: 600cosA = xcos35

  • kirbykirbykirby
  • · Replies 2 ·
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2

Help finding the magnitude of this number.

  • kelp
  • · Replies 5 ·
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5

How many people in a group would you expect to have the same birthday?

  • Procrastinate
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1
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6

Verify "Sin2(x)Cos2(x) - Cos2(x) = 0" Identity

  • caharris
  • · Replies 23 ·
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23

Solve Circle Equation: Complete the Square for Center & Radius

  • srv96
  • · Replies 3 ·
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3
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3

Card Game Probability Question

  • Procrastinate
  • · Replies 4 ·
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4

Do 4 Linearly Independent Vectors in R^4 Always Span the Space?

  • lkh1986
  • · Replies 2 ·
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2

Finding the Vertex of a Parabola: A Quick Guide

  • jeetp26
  • · Replies 3 ·
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3

Normal Distribution - Discrete or Continuous?

  • Procrastinate
  • · Replies 1 ·
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1

Shortest distance between plane and point

  • physics_197
  • · Replies 2 ·
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2
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3

Permutations & Combinations - Find the sum

  • zorro
  • · Replies 11 ·
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11

Permutations with 3 balls of different colours in 4 glass cylinders

  • zorro
  • · Replies 3 ·
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3

Quadratic Functions Word Problem, It's Tricky

  • Nienstien
  • · Replies 33 ·
2
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33

Need Help with Trig Identity Problem - Any Assistance Appreciated!

  • Barchie
  • · Replies 4 ·
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4

A (simple?) question on fractions

  • t_n_p
  • · Replies 9 ·
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9

Quadratic Question Dealing With Perimeter

  • kylepetten
  • · Replies 6 ·
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6

Probability of winning four holes in golf

  • akhanijow
  • · Replies 3 ·
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3

Calculating the Slope of a Function at x = -2/3 | Independent Study Problem

  • morrowcosom
  • · Replies 10 ·
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10

Are There Other Strange Division Patterns Besides Cancelling 6's?

  • madah12
  • · Replies 4 ·
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4

Geometry with circles, triangles and squares

  • thereddevils
  • · Replies 10 ·
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10

Composition of Functions: Finding g(f-1(x)) with Given Equations

  • Darknes51986
  • · Replies 3 ·
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3

Liquid Volume of a Frustum of a Cone

  • labsean
  • · Replies 1 ·
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1

Probability of a Population greater than the one of a sample

  • SV7
  • · Replies 3 ·
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3

Find polynomial when given a complex root

  • jkristia
  • · Replies 5 ·
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5

How Do You Solve the Inequality \(\frac{1}{2^x} > \frac{1}{x^2}\)?

  • zeion
  • · Replies 6 ·
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6

Help with simulating distributions

  • sneaky666
  • · Replies 1 ·
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1

Solving Algebra Problem: (7/4)^x = 5^(1-x)

  • macbowes
  • · Replies 10 ·
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10

Probability question; Conditional probability and poisson distribution

  • TaliskerBA
  • · Replies 1 ·
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1

How can I solve for x in the inequality 1/x <= 4?

  • mackhina
  • · Replies 8 ·
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8

Probability Question.Can somone tell me if i am doing right thing

  • cloud360
  • · Replies 9 ·
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9

What Are the Correct Values of a and b in the Polynomial Problem?

  • ghostbuster25
  • · Replies 7 ·
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7

Solving Complex Number Homework: No Value for x

  • zorro
  • · Replies 6 ·
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6

Graphing calculator scene project

  • gchiffxo
  • · Replies 6 ·
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6

Galois theory. field extension, constructible/algebraic numbers

  • annawells
  • · Replies 13 ·
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13

Ox-words: Rules, Length & Occurrences of a & b

  • jammed
  • · Replies 1 ·
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1

Prove by induction or any other logical argument

  • jammed
  • · Replies 26 ·
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26

Binomial Probability: More Than 1 Survival from 10 Chicks

  • Procrastinate
  • · Replies 6 ·
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6
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1

Some number belongs to real such that

  • lovemake1
  • · Replies 3 ·
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3

Proving Continuous Function Homework

  • lovemake1
  • · Replies 1 ·
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1

Find solutions to non-linear equation

  • mackhina
  • · Replies 3 ·
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3

Solving for Values in an Inverse Partitioned Matrix

  • BraedenP
  • · Replies 2 ·
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2

Solve for Area with Given Vertices Using Vector Calculus

  • matt222
  • · Replies 7 ·
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7

Proving Implication with Truth Tables: When Do We Use T or F?

  • sara_87
  • · Replies 4 ·
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4

What Determines the Cross Sectional Flow Area in Air Ducts?

  • toofatcoolz
  • · Replies 1 ·
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1

Discover the Probability of Rolling a 6-6-6-6-4-1 with Six Dice"

  • j00borg
  • · Replies 11 ·
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11

Factoring a higher order polynomial

  • mateomy
  • · Replies 5 ·
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5

Magnitude of this complex number

  • henryc09
  • · Replies 1 ·
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1

What is the limit of k over k squared?

  • icystrike
  • · Replies 8 ·
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8

Is the quotient of periodic functions also periodic?

  • Kyyzen
  • · Replies 1 ·
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1

Matrix Right-Inverse: Find x_1,x_2 for Ax=b

  • TsAmE
  • · Replies 2 ·
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2

Proving f(n) = 5 x 3^n - 4 with Mathematical Induction

  • BasilBrush
  • · Replies 3 ·
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3
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43

Statistics: Standard Normal Distribution

  • shawnz1102
  • · Replies 2 ·
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2
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2

Ellipse Equation w/ only vertices and focus

  • kitgk
  • · Replies 1 ·
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1
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1

Finding other points on the line given the midpoint

  • adillhoff
  • · Replies 2 ·
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2

Proving Subgroup Equality in Group Theory

  • ranoo
  • · Replies 4 ·
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4