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.
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Rank of a Matrix and Solving Linear Equations with Vectors
- rock.freak667
- · Replies 9 ·
When will the stone reach its highest elevation and hit the ground?
- TbbZz
- · Replies 6 ·
Triangle Inequality: Solve |(a+b)-13| < 1
- physstudent1
- · Replies 3 ·
Proving a linear combination of periodic functions is periodic
- VinnyCee
- · Replies 1 ·
Finding the Center of a Circle Using Perpendicular Bisectors
- L²Cc
- · Replies 5 ·
Calculating Gem Distribution in a Combination and Permutation Problem
- haoku
- · Replies 6 ·
Proving Subset Relation: A⊂B ⇒ B'⊂A
- neelakash
- · Replies 3 ·
Arranging 6 men and 2 boys with separation constraints
- Lemm
- · Replies 7 ·
Proving AU(AΠB)=AΠ(AUB)=A with set operations
- neelakash
- · Replies 1 ·
Selecting Systematic Sample for Telephone Survey: Budget Limitations
- haoku
- · Replies 1 ·
Area of isosceles triangle with vertex at origin and base on y = 9 - x²
- Enderless
- · Replies 5 ·
Factoring -3x² + 12x - 9 = 0
- kurosaki69
- · Replies 3 ·
Solve x^4-2x^3-6x^2-2x+1=0 using the substitution v=x+1/x
- nirvana1990
- · Replies 15 ·
What is the Calculation for Mean and Standard Deviation with Grouped Data?
- pinkpolkadots
- · Replies 2 ·
Probability of 3 Married Couples Winning a Prize
- haoku
- · Replies 16 ·
Solving the Odd 3-Digit Number Permutations
- L²Cc
- · Replies 2 ·
Standard Deviation of basketball player height
- L²Cc
- · Replies 1 ·
Induction proof for sequence u_{n+1}=-1+√(u_n+7)
- rock.freak667
- · Replies 4 ·
Complex Numbers : Argand Diagram
- Delzac
- · Replies 5 ·
Trigonometry, Prove the Identity and more
- rocomath
- · Replies 48 ·
Sketching Locus of arg(z+w^*)=arg(-iw) for Complex Loci Problem
- truewt
- · Replies 8 ·
How do I solve for cos^{-1}(x+iy) in the form A+iB?
- chaoseverlasting
- · Replies 10 ·
Counting Possibilities in Table Tennis and 3-Digit Numbers
- L²Cc
- · Replies 6 ·
Finding (f/g)(x) with f(x) = 3/(x-7) and g(x) = x² + 5x
- Corkery
- · Replies 6 ·
Roots of a Cubic Polynomial: Proving Coefficient Inequalities
- rock.freak667
- · Replies 4 ·
Find fundamental period of x(t) = cos(Pi * t)
- VinnyCee
- · Replies 4 ·
Solving 2(5^{x+1})=1+3/5^x for x in form a+log_5(b)
- matadorqk
- · Replies 38 ·
Solve Oblique Triangles using Logarithms - Check Answers
- Alberto
- · Replies 3 ·
Parametric Representations of Circles and Ellipses
- John O' Meara
- · Replies 4 ·
Finding Inverse Exponential Functions: A Method for Solving Without Answers
- omg precal
- · Replies 6 ·
Exponential question, x = [ 1 / 1 - e^-1.768] x e^-0.884
- nophysics
- · Replies 5 ·
Determining 4 intersection points of two polar graphs?
- Tekee
- · Replies 1 ·
Choosing a committee from a class
- gabby989062
- · Replies 1 ·
Prove Heron's Formula (Trigonometry)
- rocomath
- · Replies 4 ·
Angle Addition Formula for three angles?
- PFStudent
- · Replies 5 ·
How Do You Calculate the Angle and Area in Trigonometry Problems?
- rocomath
- · Replies 1 ·
Proving properties of the Dirac delta function δ(y)
- deah
- · Replies 6 ·
How do I simplify log₉(1/27)?
- matadorqk
- · Replies 48 ·
How to Minimize Cost for an Open-Top Box with Given Volume and Width
- omg precal
- · Replies 22 ·
What are the Coordinates of the School at the Armageddon Point?
- t_n_p
- · Replies 49 ·
How to Prove the Linearity of the Trace Function in Matrix Algebra
- Saladsamurai
- · Replies 3 ·
Functions [f(x)] and substituton
- Tekee
- · Replies 12 ·
How to Solve Logarithmic Equations Quickly and Easily?
- omg precal
- · Replies 7 ·
Finding a Quartic Polynomial Equation
- omg precal
- · Replies 14 ·
Finding locus of complex number Z where |Z-1|+|Z+1|=7
- nekteo
- · Replies 1 ·
Exponential equation, solving for one variable
- Tekee
- · Replies 11 ·
How to find an unknown angle with sine when I have opposite and hypotenuse
- blueparukia
- · Replies 2 ·
Polynomials do or don't have integer roots?
- povatix
- · Replies 12 ·
Probability of numbers between 0 and 1
- deah
- · Replies 5 ·
Can angles a and b in this geometry figure be determined uniquely?
- cepheid
- · Replies 4 ·
Metric Spaces Not Based on Inner Product
- kthouz
- · Replies 1 ·
How Do You Find Eigenvectors for a 3x3 Matrix with a Known Eigenvalue?
- Bkkkk
- · Replies 11 ·
Simple but Unfamilliar Algebra
- tanky322
- · Replies 1 ·
Exact value of sin(1) and expressing real numbers with integers
- rootX
- · Replies 5 ·
Find the largest integer n such that n^6021 = 2007^2007
- physicsrox
- · Replies 17 ·
How can I solve:(x^2)(e^x) - e^x = 0and2e^(2+x)=6For
- antinerd
- · Replies 12 ·
Finding a and b in arithmetic and geometric progressions
- matadorqk
- · Replies 1 ·
Is it me being retarded or did ETS screw up again?
- asd1249jf
- · Replies 3 ·
Elementary problems that still baffle me
- Gib Z
- · Replies 24 ·
Joining two lines(3D) with a circular arc fillet
- velanvela
- · Replies 7 ·
What is the Angle Between Vectors Method?
- t_n_p
- · Replies 59 ·
Why is the scatter plot of quiz scores not linear?
- lLovePhysics
- · Replies 4 ·
What is the Probability of Gerry Infield Getting Two Hits in His Next 5 At Bats?
- chemzz
- · Replies 11 ·
Why is -sin 40° equal to -cos 50°?
- lLovePhysics
- · Replies 9 ·
Finding functions f and g where (f+g)(x)=5 on [0,∞)
- gabby989062
- · Replies 3 ·
What Are Implicit Functions and Ordered Pairs in Algebra?
- gabby989062
- · Replies 3 ·
Word problem solved by applying a quadratic equation
- danielle36
- · Replies 8 ·
Intersection of line and circle
- minase
- · Replies 3 ·
Finding a basis for polynomials where p(5)=0
- tsMore
- · Replies 6 ·
A weird absolute value problem
- lLovePhysics
- · Replies 14 ·
Polynomials - Polynomial Equations
- TheDanny
- · Replies 9 ·
Solving AX=XB for matrix X
- Cmunro
- · Replies 21 ·
Evaluating Fractions with fractorials
- kuahji
- · Replies 4 ·
Finding a where a 3×3 matrix determinant equals zero
- Cmunro
- · Replies 10 ·
Are radical equations with ± signs functions or not functions?
- lLovePhysics
- · Replies 12 ·
Radicals Do they always have a +/- in front of them?
- lLovePhysics
- · Replies 8 ·
Proving (cos x + i sin x)² = cos 2x + i sin 2x
- nirvana1990
- · Replies 4 ·
Why is the LCD of 5/2x and 7/5x3y 10x^2y and not 10x3y?
- marcflores
- · Replies 4 ·
Solve Vector Problems: a + b, a - b, a - 2b
- Darkiekurdo
- · Replies 6 ·
Best PreCal Text to Prep for SAT Subject Math IIC Test?
- lLovePhysics
- · Replies 3 ·
Is the Dot Product Distributive Property Just Too Simple?
- katrina007
- · Replies 4 ·
Completing the square / Changing format of equation
- danielle36
- · Replies 4 ·
Is Vandermonde's Identity Related to the Binomial Coefficient Identity?
- ehrenfest
- · Replies 1 ·
Line y=mx−2 intersecting parabola y²=4x and parallelogram locus
- Harmony
- · Replies 1 ·
How Many Equilateral Triangles are Needed for Perfect Coverage?
- engin
- · Replies 2 ·
Solve for x: Log (x+5)= Log x + Log 5
- lLovePhysics
- · Replies 6 ·
How can I improve the accuracy of Excel's SOLVER add-on for curve fitting?
- flash
- · Replies 1 ·
Inscribing a quadrilateral in a circle
- ehrenfest
- · Replies 5 ·
3 dimensional vector problem .
- ngkamsengpeter
- · Replies 2 ·
What does it mean to evaluate a matrix expression?
- Fiorella
- · Replies 5 ·
Proving the Truth: The Relationship Between Quadratic Equations and Graphs
- lLovePhysics
- · Replies 3 ·
Proving all bulbs can be ON simultaneously with symmetric button connections
- engin
- · Replies 2 ·
Covariance between data stats problem
- danago
- · Replies 2 ·
How Do You Calculate Tension and Compression in a Hanging Restaurant Sign?
- webspherev6
- · Replies 1 ·
Proving two trigonometric identities with cot, tan, csc and sec
- Anonymous™
- · Replies 5 ·
How Do You Calculate Probabilities for Guessing on a Multiple Choice Test?
- s.mack77
- · Replies 10 ·
Formula for factoring x^200 - y^200
- ehrenfest
- · Replies 5 ·
Simplifying Trig Expressions and cofunctions
- Mr. Mathmatics
- · Replies 4 ·
Solving loga(2+x) = 2 + logax
- Cmunro
- · Replies 6 ·
Why does taking natural log of 2^x=3 change the exponent to a coefficient?
- lLovePhysics
- · Replies 12 ·