Precalculus Mathematics Homework Help Forum

Unitary matrix: are row and column sums of squared magnitudes equal?

Proof of \sqrt{ab} = \sqrt{a}\sqrt{b} for all ab>0

Prove the following inequality

Is the Set of Rational Numbers with the Relative Topology Not Locally Compact?

Simplifying Factorials: Rules and Examples

Necessary and sufficient condition for inequality

Shifting a graph to a new equation

Finding the error in solving (3x - 7)/4 - (4x + 5)/2 = 3/4

What is the proof for minimizing the sum of distances on a sliced rectangle?

How to solve simple Percentages problem?

Solving |2x - 1| = x^2

Finding Percent Error in S.R. Problem: Simplifying Expression with 6.7x10^(-16)

Why multiply by x^2 instead of x^3 to rationalize a denominator with x^3

Bridge Probabilities exactly 1 person with 1 suit?

Solving Logarithmic Equations with Given Logs

How to Find the Percentage of Area Outside a Square Inscribed in a Semicircle?

Where does the -56x term come from when squaring (14-2x)/π?

Can You Calculate Matrix Inverses with Nilpotent Matrices?

Solving the Function y=sin2x +cos3x

Simplify this algebraic expression

What is the Correct Probability of a Student Becoming Chairperson?

Sum/differences of two normal variables

Simplifying sin(α+45): A Challenge!

Simplify x(9x+2) / x³(x-2)

Solve 1729 as Sum of 2 Cubes: Natural Numbers

Tangent lines to C1 that are also tangent to C2, and area enclosed

Solving for x in a Quadratic Exponential Equation

Further Maths (Matrices and solving simultaneous equations)

Linear Algebra: Denoting an interval

Partial fractions nth degree factors in the denominator

Complex numbers problem - lots of Algebra

Centripetal Force: Find Min Radius of Airplane Path

Prove Max/Min of f(x) -> Sqrt of f(x) at x0

Rearranging the Projectile Motion Base Quadratic Formula for Initial Velocity

Graphing y = 2|x - 1| - 3|x + 1| + 3x + 1 and solving the inequality

Creating a Quadratic Equation with Inverted Roots

Finding basis for kernal of linear map

How to rewrite 2D Gaussian eqn in terms of x?

A basic function question - with a strange absolute value placement

Complex equation (for a 9th grader :>)

How do I manipulate a formula to get 1/√(w²+4)?

Expanding and Substituting: Solving (1-3x)^{\frac{1}{3}}

What is the equation for sine alpha when alpha is greater than 90 degrees?

Is Squaring the Best Method to Solve Absolute Value Quadratic Equations?

Spivak's Calculus Section I Trouble

Quadratic equation with roots of α and β

Fitting a Function given 3 points

Given a sequence 1,2,2,3,3,3,4,4,4,4,5,5,5,5,5

Find Range of k for Two Positive Roots of Equation

Finding fg(x) and gf(x) with piecewise function g

Can You Extend a Function Defined on Atomic Sentences to Complex Sentences?

What is a proper subsentence of a given sentence and can you provide an example?

Probability when seleting balls from an urn

Partial fractions for 1/(s(1+RCs))

Prove by induction that sum of cubes equals sum squared

How can I prove the trig identity sinxcosxsec^2x = tanx?

What is the probability that both products are out of stock?

How Do I Solve Polynomial Division and Trigonometric Identities?

Solve Exponent Question: PV^{\frac{2+f}{f}}

Determine if sqrt(-3) is an element in a splitting field

Modeling a Swing with parametric functions

Finding Probability in Genetics Experiment: Vermillion Eyes or Miniature Wings?

Graph Theory: a tree and it's complement proof

• Poll

How Do You Solve Quadratic Equations and Predict Zeroes Without a Calculator?

Find length of two line segments in parallelogram.

Solve Time for Tank Filling with 2 Pipes

Solving Equations Using the Unit Circle

Injectivity and Surjectivity of Functions with Lists and Sets

Proving n! ≤ n^n by mathematical induction

Truth table and proving a tautology

Short Probability (permutation) question

Probability of At Least 1 Cherry Yogurt: 7/55

Does Bisecting Angle A in a 3-4-5 Triangle Divide It into Two Equal Areas?

Volume of ice cream in a cone using disk method integration

Finding out the amount of glass through integration

Find Dom(f) and Range(f) of g(x)=(In(x-5)/In(x-5))+sqrt(10-x)

Why does f(x) = x² - 4x on |x| ≤ 1 give two values for its inverse?

Divide Polar Form: Solve 5∠2.214/√5∠-1.107

Solving n/(n+3) + 7/(n+4) = 1

How Can We Use Calculus to Predict Population Growth?

Finding real and imaginary parts of e^(-1+2i)(2-i)

Finding angle C when AH=HC, AB=DC and angle A is 54°

Shortest distance between two skew lines in 3D

Solve cos(θ + π/2) if sin θ = 3/7 Exactly

What is the height of the smaller cylinder in this scale factor?

Finding the equation to a non-linear set of points

Summation with Binomial Expansion

Cosh2x+2sinh^2x, not sure if this goes in this forum

By using binomial distribution if two coin are tossed 4 times ,find?

Two coin are tossed 4 times ,find?

Induction proof of an inequality

Proving M is a subgroup of G with order 22

Relating probability distributions huh?

Probability. Why can't I add them?

What is the Equivalence Class for the given Equivalence Relation?

How Do You Simplify Complex Fractions?

Can you explain the solution for 5x3 + 2x2 + x = 20 between x = 1.4 and x = 1.5?

Probability problem without replacement

Factoring Quadratics with x2 > 1

What is the angular coefficient of the tangent line to two circumferences?