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
How to write auxiliary lines in a formal geometric proof
- Dousin12
- · Replies 8 ·
Arranging 38 pens of 4 different colors
- iScience
- · Replies 12 ·
Proving Linear Independence and Spanning in Vector Spaces
- Danielm
- · Replies 3 ·
Proof: Linear Dependence of Vectors in a Vector Space
- Danielm
- · Replies 6 ·
Why is there no ln 2 in the solution to e^z=(√2+i√2)/2?
- Dousin12
- · Replies 6 ·
How Many Ways to Deal Two Distinct Pairs in a Four-Card Hand?
- davedave
- · Replies 3 ·
Understanding Complex Numbers: Formulas and Applications
- Dousin12
- · Replies 3 ·
What are the solutions to the complex polynomial equation ##z^3+3i\bar z=0##?
- Dank2
- · Replies 64 ·
Finding the Volume of Cones and Cylinders Using Known Values
- Kirito123
- · Replies 31 ·
Counting Reflexive and Anti-Symmetric Relations on a Finite Set
- Danielm
- · Replies 6 ·
Finding the Missing Side Length of a Composite Shape
- Kirito123
- · Replies 5 ·
Finding height and volume of a cylinder
- Kirito123
- · Replies 9 ·
Inequality without factor table
- Rectifier
- · Replies 26 ·
Show that (z1 + z2)/(1 + z1z2) is real when |z1| = |z2| = 1
- Dank2
- · Replies 47 ·
Finding the phase shift in a Ferris wheel height function
- Veronica_Oles
- · Replies 1 ·
Ocean Word Problem: Find Equation
- Veronica_Oles
- · Replies 5 ·
Find Angle of Refraction: Snell's Law Solution
- IBNU1
- · Replies 3 ·
What are the Max and Min Values for Tide Height?
- Veronica_Oles
- · Replies 16 ·
Modifying h(t) to Match New Tidal Data
- Veronica_Oles
- · Replies 6 ·
Adjusting the Model: d = 12 sin (30(t-5)) + 14
- Veronica_Oles
- · Replies 4 ·
Cone volume calculation with radius 6 and height 15
- Kirito123
- · Replies 2 ·
Converting x=5cos⁷(t), y=5sin⁷(t) to Cartesian form
- 53Mark53
- · Replies 11 ·
Recursive sequence problem, or something similar
- late347
- · Replies 7 ·
Logic question on finding age of someone
- chwala
- · Replies 17 ·
How Do We Solve These Tricky Number Series Problems?
- CWatters
- · Replies 11 ·
How Do You Determine Values of a Periodic Function with Limited Data?
- Veronica_Oles
- · Replies 2 ·
Quick Trigonometric Identity Question
- Draconifors
- · Replies 5 ·
How to Solve a Logarithmic Equation on a Given Base?
- colt
- · Replies 4 ·
Factoring two variable function
- terryds
- · Replies 7 ·
Find the equation of an ellipse
- Matejxx1
- · Replies 10 ·
Finding the marked angle in a triangle with parallel sides
- SpartaBagelz
- · Replies 9 ·
Disproving a^3 + b^3 + c^3 ≡ 0 (mod 7) for non-multiples of 7
- lolo94
- · Replies 11 ·
If f(0) and f(1) are even, is f(n) always an integer?
- lolo94
- · Replies 3 ·
Why is there a twist in these logarithms?
- sidt36
- · Replies 10 ·
Complex Plane - Graphing Powers
- zr95
- · Replies 24 ·
How Does Price Affect Supply and Demand for Wheat?
- Terrell
- · Replies 6 ·
Is 3^n Greater Than n^4 for All n>=8?
- lolo94
- · Replies 12 ·
What Is the Common Difference in This Arithmetic Progression?
- kaspis245
- · Replies 3 ·
Why Does This Trigonometric Identity Seem Incorrect?
- Veronica_Oles
- · Replies 11 ·
Find the Y-Axis in a Coordinate System with Given X and Z-Axis Values
- Philosophaie
- · Replies 3 ·
When Are Two Vectors Orthogonal in Vector Algebra?
- terryds
- · Replies 4 ·
How Do You Rotate and Stretch a Complex Number Vector?
- AlexChan
- · Replies 6 ·
Proving AC · BP = 0 with orthogonality conditions
- 53Mark53
- · Replies 18 ·
One solution, no solution or infinite solutions with k
- Mrencko
- · Replies 24 ·
Making formulas and graphing them
- Kirito123
- · Replies 11 ·
Probability coin and die Question
- mikebrisingr
- · Replies 4 ·
Which equations are linear in x1, x2 and x3?
- Mrencko
- · Replies 3 ·
Disproving a Polynomial with Integer Coefficients: Elementary Math Proof
- lolo94
- · Replies 5 ·
Proving 2/5*(2^0.5)-1/7 is Irrational: Elementary Math Proof
- lolo94
- · Replies 1 ·
How Do I Solve This Multivariable Algebraic Equation?
- dlacombe13
- · Replies 9 ·
Solution to this trigonometric equation
- diredragon
- · Replies 8 ·
How Do You Solve Exponential Equations with Different Bases?
- johnsonjohn
- · Replies 19 ·
What Is the Sum of the Maximum and Minimum Values of r Given These Conditions?
- terryds
- · Replies 17 ·
Making realistic scenarios for the given lines
- Kirito123
- · Replies 15 ·
Finding the other side of a rectangle with height 2 and base 8
- Kirito123
- · Replies 26 ·
How Do You Calculate the Total Area of Rectangles and Triangles Combined?
- Kirito123
- · Replies 3 ·
Solving a polynomial with complex coefficients
- astrololo
- · Replies 6 ·
Shouldn't f(t) = V have inverse f^{-1} (V) not f^{-1} (t)?
- kostoglotov
- · Replies 7 ·
Word problems (Deriving an equation from the problem)
- ryan001
- · Replies 9 ·
Reflecting the line āz + az̄ = 0 in the real axis
- erisedk
- · Replies 7 ·
What is the optimality proof of the earliest finish time algorithm?
- lolo94
- · Replies 1 ·
Proving 1/(1+cosx) = csc²x - cscxcotx
- Veronica_Oles
- · Replies 8 ·
Solving for cot2x + sec2x = tan2x + csc2x
- Veronica_Oles
- · Replies 6 ·
Combination Question with Identical Pieces
- member 428835
- · Replies 14 ·
When does (x-a)(x-b)/(x-c) assume all real values?
- erisedk
- · Replies 17 ·
What curve does z = (α + βt)/(γ + δt) represent in the complex plane?
- erisedk
- · Replies 1 ·
Proof about min spanning tree property
- ciphone
- · Replies 2 ·
What is the proof for 2sin2θ - 1 = sin2θ - cos2θ?
- Veronica_Oles
- · Replies 4 ·
Solving the Equation: (sinθ + cosθ)2 = 1 + 2sinθ cosθ
- Veronica_Oles
- · Replies 1 ·
Finding the Ordered Pairs for an Exponential Limit
- erisedk
- · Replies 2 ·
Quadratic Problem: Find Sum of Roots of 4 Equations
- erisedk
- · Replies 4 ·
Finding trig identities when given only sin α = √3/2
- Ray9927
- · Replies 2 ·
Solve Inequalities Problem: x ∈ (-2,-1) ∪ (⅔, -½)
- erisedk
- · Replies 5 ·
Writing equations and calculating cost based on a graph
- Kirito123
- · Replies 43 ·
Help proving a Euclidean geometry theorem
- Ameer Bux
- · Replies 14 ·
How many ways can 12 balls be arranged into 4 different rows
- kukumaluboy
- · Replies 7 ·
Quadratic with variable buried in sqrt?
- irishetalon00
- · Replies 4 ·
How Do You Solve the Ambiguous Triangle Case in Trigonometry?
- Veronica_Oles
- · Replies 5 ·
What is the common root for two polynomial equations with a shared coefficient?
- vijayramakrishnan
- · Replies 6 ·
What Are the Variable Restrictions for Jeffrey's Dinner Party Budget Equation?
- Kirito123
- · Replies 16 ·
What Is the Probability of Drawing a Jack and Then a Heart from a Deck of Cards?
- member 428835
- · Replies 22 ·
Mapping a + b√2 to a 2×2 matrix
- SYoungblood
- · Replies 18 ·
Finding sum of roots of trigonometric equation
- Priyadarshi Raj
- · Replies 3 ·
Solving an equation with fractional part function
- Priyadarshi Raj
- · Replies 5 ·
Simplifying a log expression with identities
- ProfuselyQuarky
- · Replies 16 ·
Proving a/b + b/a ≥ 2 for positive reals
- TheMathNoob
- · Replies 4 ·
Independent/dependent variable and modeling equations
- Kirito123
- · Replies 4 ·
Creating an equation that models a scenario
- Kirito123
- · Replies 16 ·
Identifying the slope of a line
- Kirito123
- · Replies 7 ·
Changing standard form to slope intercept form.
- Kirito123
- · Replies 4 ·
Proof of Partition Property for Subset A in Universal Set U
- TheMathNoob
- · Replies 1 ·
Is n congruent to 1 mod 5 if n is congruent to 6 mod 5?
- TheMathNoob
- · Replies 7 ·
Im trying to determine the y and x intercepts of this line.
- Kirito123
- · Replies 6 ·
Determining the equation of a line
- Kirito123
- · Replies 10 ·
Finding the Domain of a Trigonometric Function
- Astraithious
- · Replies 6 ·
Question from trigonometry -- prove that the largest angle is greater than 120°
- prashant singh
- · Replies 6 ·
Percentages -- having trouble understanding how to take a percentage of a number
- zak100
- · Replies 6 ·
Why is cashier's algorithm optimal for U.S. coin denominations?
- Sebastian Martinez
- · Replies 2 ·
Is it Possible to solve Exponential Equations like these?
- Alex Myhill
- · Replies 3 ·
Area of Shaded Region in Elementary Geometry
- davon806
- · Replies 20 ·