Precalculus Mathematics Homework Help Forum

Post thread
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.
Combinatorics help: stars and bars and beyond
Replies
7
Views
2K
Finding the Limit of (cos(Pi/2x))^2x when x is ∞
Replies
1
Views
1K
Proving Non-Existence of Solutions to a Small Number Theory Problem
Replies
8
Views
2K
Proof by Induction: Sum of 2^n - 1 Explained Step by Step
Replies
3
Views
1K
Indicating Vector Inclusion in Span of Matrix Columns
Replies
6
Views
2K
Factoring a third degree polynomial
Replies
6
Views
2K
Analyzing Logical Arguments: Not A, B or Not C, B→ (A and D), E→(C)
Replies
2
Views
1K
Solving for k and m in f(x) = kx+m
Replies
1
Views
2K
Birthday problem with repetitions
Replies
2
Views
3K
Finding at which point multiplied numbers coalesce
Replies
2
Views
1K
Partial Fraction Decomposition—Multiple Variables
Replies
2
Views
13K
Solve for w: u=-7i-3j, v=-4i+4j, w=5u+4v
Replies
11
Views
2K
Linear equation strange problem
Replies
2
Views
1K
Using FOIL with "Longer" Expressions - HELP
Replies
4
Views
1K
The angle between a line and a plane
Replies
18
Views
5K
A question on mathematics of finance [Simple interest]
Replies
7
Views
2K
Express (2n+1)(2n+3)(2n+5) (4n-3)(4n-1) in factorials
Replies
3
Views
4K
Geometry question form ax^2+bx+c
Replies
5
Views
2K
Proof of a property of the cross product
Replies
11
Views
2K
Finding the X-intercept of a function
Replies
4
Views
2K
Equilateral triangle ABC is inscribed in a circle
Replies
11
Views
3K
Solving a complex numbered cubic equation
Replies
4
Views
2K
Combinatorics Homework: Counting Sequences from a Standard Deck of 52 Cards
Replies
7
Views
2K
Shorten equations with math notations?
Replies
3
Views
2K
Slope of Linear function
Replies
7
Views
1K
How can the lim inf and lim sup be used to solve this mystery?
Replies
1
Views
1K
Possible combinations of functions
Replies
20
Views
2K
Solving Inequalities with Exponents: Maximizing x
Replies
3
Views
1K
Solve for X: 4*(5^x)-3(0.4^2x)=11 | Quick Algebra Homework
Replies
4
Views
1K
Stats Problem using Stirling's Approx.
Replies
8
Views
2K
Why Fermat's little theorem not working here
Replies
6
Views
2K
Minimum numbers of balls to be drawn
Replies
2
Views
3K
How to find Remainder of this expression?
Replies
10
Views
2K
Does Taylor Series accurately represent limits in calculus?
Replies
1
Views
1K
Solve Limit x→2: (4-(√18-x))/(x-2)
Replies
11
Views
2K
Help with Notation: Understanding x(.) & C(.)
Replies
8
Views
2K
How to Do (f o g)(1) Function Problem?
Replies
3
Views
26K
Arc length of intersecting circles
Replies
3
Views
3K
Solve Probability Problem: Find P(B) & P(A/B)
Replies
4
Views
1K
Lagrange Points Calculation Work
Replies
2
Views
1K
Proving least upper bound property implies greatest lower bound property
Replies
22
Views
12K
The area of a square with right triangle inside it
Replies
6
Views
4K
How Retirement Changes Affect Unemployment Rates
Replies
4
Views
3K
Constructing Four Isosceles Trapezoids
Replies
12
Views
2K
Derivation of mapping for isometric rotation about i
Replies
3
Views
1K
Clocks and their relative speeds
Replies
2
Views
2K
Finding Vertices of a Rhombus: Method and Rules | Homework Help
Replies
4
Views
2K
Solving Algebraic Expressions with Potens Rules | Quick Homework Question
Replies
4
Views
1K
Proving the Uniqueness of Natural Number Successors | Axiom 2.4 Explained
Replies
6
Views
3K
Find the Pattern in 3+6+12+20+30 +n
Replies
7
Views
1K
Is Addition Associative? A Proof Using Induction
Replies
6
Views
2K
What is the Value of f(0) for a Quadratic Function with Roots at 3 and -2?
Replies
2
Views
1K
Understanding the change from cot graph to tan graph
Replies
2
Views
2K
Algebra help with complex numbers
Replies
3
Views
1K
Find All Subgroups of A = {1, 2, 4, 8, 16, 32, 43, 64} | Group Theory Question
Replies
6
Views
1K
What is the meaning of Λ in the contingency equation?
Replies
2
Views
1K
Static cable car, approximate tensions
Replies
20
Views
2K
Would someone be able to isolate v?
Replies
6
Views
1K
How does the angular velocity of a ferris wheel in radians/s compare to m/s?
Replies
5
Views
2K
Efficiently Calculate Binomial Expansion Coefficients | Homework Equations
Replies
2
Views
2K
Permutations and Combinations: Distributing Balls Among People
Replies
4
Views
2K
Generel Solution of sinx+cos^2 x= 1
Replies
8
Views
2K
Sine function, need some help understanding its meaning.
Replies
1
Views
1K
Intersection of A & B: Answer to Puzzling Question
Replies
4
Views
1K
Deducing sums such as 1+2+3+ .+100
Replies
14
Views
2K
Sequence Problem: Find Next 3 Numbers
Replies
11
Views
3K
Is the Solution to the Absolute Value Inequality x^2<4 then |x|<=2 Correct?
Replies
2
Views
1K
Binomial expansion- divisibility
Replies
1
Views
1K
Geometric series vs. future value computation based on geometric series
Replies
2
Views
2K
Why Are Discounted and Net Cash Flow Calculations Different?
Replies
12
Views
2K
The Attempt at a SolutionWhat is the Normalized Function for Y(k) = A(a-|k|)?
Replies
5
Views
1K
Exponential revision question I can't work out?
Replies
35
Views
4K
Trigonometric Identity for Solving Sin Cubed Equations
Replies
15
Views
2K
How Do You Calculate the Length of a Chord and Tangential Line in a Circle?
Replies
14
Views
2K
Can a Ship Enter a Harbor? Calculating Depth Using h(t) = 3 + 2sin(0.5236t)
Replies
2
Views
1K
Is Every Set in ℝ3 a Subspace?
Replies
11
Views
2K
Binomial Expansion Coefficient of x^n
Replies
14
Views
2K
Trig, how long is the graph under y=0
Replies
3
Views
2K
Gravitational acceleration, cosine problem
Replies
4
Views
2K
Geometric distribution Problem
Replies
5
Views
2K
Uniform Discrete Sample Distribution
Replies
6
Views
2K
Probability - 3 Independent Events
Replies
10
Views
2K
Bezout identity corollary generalization
Replies
1
Views
1K
Logarithms and scientific calculator
Replies
5
Views
2K
How many ways can 6 cards be chosen from a deck to have all suits present?
Replies
11
Views
3K
Combinatorics - No two together
Replies
8
Views
2K
What Values of k Give Infinite Solutions in This Homogeneous System?
Replies
12
Views
2K
Quadratic Equations in Two Variables: How Many Solutions?
Replies
13
Views
2K
Question about arithmetic progressions
Replies
3
Views
2K
How Many Non-Confusing Codes Can Be Formed from Distinct Digits?
Replies
7
Views
2K
Trying to help someone simplify this: (2ab - 3b^2)/(3b - 4a)
Replies
2
Views
2K
Proving -(a + b + c) = -a + (-b) + (-c)
Replies
2
Views
1K
Ptolemy's Theorem: Deriving 2sin(θ/2)
Replies
1
Views
2K
Combinatorics, alphabet/bitstrings
Replies
11
Views
2K
Derivation of parametric Equations?
Replies
11
Views
2K
Proving Sin x + Sin 2x + Cos x + Cos 2x = 2√2cos(x/2)sin(3x/2+π/4)
Replies
2
Views
2K
Solve AM GM HM Inequality for a+b+c=0
Replies
2
Views
2K
Solve Quadratic Equations: Find |a-b| for n=a,b
Replies
1
Views
1K
How Do You Solve Complex Number Equations?
Replies
2
Views
7K
Imaginary Roots and Vieta: 3a < 2+4c
Replies
7
Views
2K