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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Difficult maths problem - requires some thought
- david18
- · Replies 2 ·
Question from Lin Al quiz I'm pretty sure I got wrong.
- moe darklight
- · Replies 7 ·
Solving for sin(xi): A Mathematical Exploration
- epkid08
- · Replies 1 ·
How do I solve for y in this trigonometric equation?
- joe215
- · Replies 1 ·
Normal distribution with male and female life spans
- master cherundo
- · Replies 4 ·
Relatively easy simplification
- thrill3rnit3
- · Replies 5 ·
How Do You Solve This Logarithmic Equation for X?
- rich6490
- · Replies 1 ·
Solving absolute value inequalities with |x-2| ≥ 4
- jvignacio
- · Replies 6 ·
Finding nickels, dimes, quarters from constraints and all valid combinations
- war485
- · Replies 4 ·
What is the conjugate of 2-5i?
- Ersatz
- · Replies 5 ·
Why does (2n-1)! = (2n-1)(2n)(2n-1)!?
- fiziksfun
- · Replies 3 ·
Sum of squares of odd numbers 1^2 + 3^2 + 5^2 + ... + (2n+1)^2
- garyljc
- · Replies 1 ·
Proving the converse: if x^n<y^n then x<y for positive x and y
- garyljc
- · Replies 7 ·
What is the method for finding the volume of a trapezoidal shape?
- drdizzard
- · Replies 3 ·
Mixing two methanol-water solutions of different concentrations
- yoleven
- · Replies 2 ·
Finding x given inverse function values for two cubic functions
- farmd684
- · Replies 3 ·
What is the locus of R for PQ as a focal chord?
- Mentallic
- · Replies 6 ·
Proving the Binomial Theorem: Simplifying 3^k C(n,k) = 2^2n
- jenny Downer
- · Replies 1 ·
Group like terms factoring problem
- kuahji
- · Replies 2 ·
What is the sum of integers from 1 to n with r = 1 if n = 20?
- tharindhudg
- · Replies 5 ·
Inverse of the difference of two matrices A and B
- yukawa
- · Replies 3 ·
Describing derivatives in practical terms
- madgab89
- · Replies 3 ·
Sum of invertible matrices is invertible?
- soul5
- · Replies 1 ·
Proving X1X2 ~ Y1Y2: Distribution of X1 and Y1 is the Same as X2 and Y2
- shan
- · Replies 3 ·
Why use cosine not sine for angles between a vector and coordinate axes
- enryiggins
- · Replies 3 ·
Probability: # of Permutations from r Choices of n Objects
- Michael Si
- · Replies 2 ·
Re: Sum of infinite series - 1/n^2
- obelu
- · Replies 3 ·
Solve 5√x ≥ 625 Exponential Inequality
- enibaraliu
- · Replies 7 ·
Yes, that is correct. The sequence is convergent for n>1, but not for n=1.
- Physicsissuef
- · Replies 3 ·
Why are log graphs of different equations not all regular parabolas?
- JBD2
- · Replies 1 ·
Solve Radical Equation: -4/9(x^9)[(3/x^2)-(1/(2^1/3))] when x = 2^1/6
- DecayProduct
- · Replies 2 ·
Laplace's equation on an annulus
- Niles
- · Replies 14 ·
Linear Algebra: If AX=B, and X and B are known, find A.
- jumbogala
- · Replies 7 ·
Venn Diagram Problem: Survey of 50 Students' Preferences
- korr2221
- · Replies 3 ·
Eh? How do I solve xe^(a/x) = b?
- WarPhalange
- · Replies 4 ·
Expressions without absolute value signs
- garyljc
- · Replies 4 ·
Is the Inequality a+b <= a^2/b + b^2/a Easy to Prove?
- nicksauce
- · Replies 4 ·
Calculating Air Flush Time for Airliner Cabin with 30000 cuft and 10000 ppm of X
- juice34
- · Replies 1 ·
Solve x = \sqrt{4 - 3x} Equation
- Sheneron
- · Replies 3 ·
Solving exponential inequalities with bases 2 and 5
- enibaraliu
- · Replies 3 ·
A natural log inequality with absolute value
- gabrooo
- · Replies 3 ·
Solving five logarithmic and exponential equations
- JBD2
- · Replies 3 ·
Spot Student Mistakes: 1/x < x < 1
- garyljc
- · Replies 5 ·
Multiplicative Inverse Manipulation Valid?
- snipez90
- · Replies 4 ·
Is x<y ⇒ x²<y² true for all x and y?
- garyljc
- · Replies 11 ·
Probability that at least one shift is unrepresented in sample of 6 workers
- TitaniumX
- · Replies 1 ·
Solving x²(4x + 13) = 9 without trial and error
- jeffmarina
- · Replies 7 ·
Prove (ab)^{-1} = a^{-1}b^{-1} with multiplicative inverses
- snipez90
- · Replies 4 ·
Converting sin(2x)cos(2x) to 1/2sin(4x)
- hayesk85
- · Replies 1 ·
What Was the Original Investment at 8.2% Compounded Semiannually for 8.5 Years?
- Makman
- · Replies 5 ·
Solve simple logarithmic question
- preet
- · Replies 2 ·
Solve Factoring Problems: 2 Examples
- theout
- · Replies 2 ·
Finding variance without knowing mean?
- MadMike1986
- · Replies 4 ·
Where does the fallacious proof of 1=2 break down
- Enjoicube
- · Replies 4 ·
Show (x^3+2x)/(2x+1) < x^2 as x -> infinite
- RogerDodgr
- · Replies 2 ·
Finding Asymptotes for a Rational Function
- Mentallic
- · Replies 8 ·
Algebra (easy for you, difficult for me)
- synthetic.
- · Replies 5 ·
How Do You Solve the Quadratic Equation \( X^2(2a - bX^2) = 2 \)?
- abhipatel
- · Replies 2 ·
Solving five exponential equations with mixed bases
- enibaraliu
- · Replies 3 ·
How to solve logarithms like log₉√3 without a calculator
- nikita33
- · Replies 4 ·
College algebra question. inequalities interval
- camilus
- · Replies 1 ·
Confidence limits of expected odds
- Andrusko
- · Replies 2 ·
Calculating Percent Yield: C₉H₈O₄ ± 5.8%
- Saturnfirefly
- · Replies 2 ·
A few areas of algebra I don't understand
- MadmanMurray
- · Replies 6 ·
Converting 4x² + 4y² + 24x - 16y - 48 = 0 to standard form
- alexm544
- · Replies 5 ·
Limits and Free Falling Objects
- pippintook
- · Replies 1 ·
Solving Cubic Equations: Finding the Roots
- Petkovsky
- · Replies 3 ·
Solving 8log27 and log3x2 = log481/2 without a Calculator
- musicfairy
- · Replies 9 ·
Induction question with logarithms
- Petkovsky
- · Replies 4 ·
Find theta given csc θ = (x-6)/(x-2) and ctn θ = (x+5)/(x-2)
- lucifer_x
- · Replies 3 ·
Proving the Inverse of a 2x2 Matrix Using Row Operations
- forty
- · Replies 4 ·
Finding the pattern in 2, 4, 3, 9, 5, 25, 18, 324
- swimchick1993
- · Replies 6 ·
Finding the Range of $\frac{x-5}{x^{2}-9}$
- BoundByAxioms
- · Replies 11 ·
Proof: Matrix A^-1 = -(1/3)((A^2) -2A -4I)
- forty
- · Replies 2 ·
Proving AB and BA are Square Matrices
- forty
- · Replies 2 ·
Calculate 3d vector from angles with respect to x and y axis
- nuggets
- · Replies 4 ·
Simplify the following equation for n 1
- roeb
- · Replies 3 ·
Stan Mows Lawn Alone: Math Problem Solution
- joanne1218
- · Replies 2 ·
Finding a parabola given two x intercepts
- revoz
- · Replies 3 ·
How do you factor a cube to identify asymptotes and holes in graphs?
- hayesk85
- · Replies 3 ·
How do I model with equations for pre-calculus?
- davis808
- · Replies 1 ·
Plotting Vector Field: V=(xi+yj+zk)/\sqrt{}(x^2+y^2+z^2)
- mite
- · Replies 2 ·
Solving the inequality 3/(|x+1|-1)+2/x<1
- XJellieBX
- · Replies 2 ·
How can I solve a complex conjugate problem for my friend in college algebra?
- camilus
- · Replies 4 ·
Question on a step in my proof.
- Diffy
- · Replies 8 ·
How Does Dividing Both Sides by (Y/L)α Transform the Production Function?
- albert2008
- · Replies 3 ·
Can You Solve the Equation (3^x) - (3^-x) = 4?
- rise
- · Replies 6 ·
How Do You Solve for a Linear Function Where f(f(x)) Equals 4x + 3?
- Gray Matter
- · Replies 1 ·
Does x squared minus x plus 41 always give prime numbers?
- yomamacjo
- · Replies 3 ·
What is the order of these functions
- Gear2d
- · Replies 4 ·
Partially filled frustum of cone
- polyperson
- · Replies 17 ·
Find Tangents to Parabola Passing Through Point A (5,-2)
- Mentallic
- · Replies 3 ·
AM-GM Inequality: Prove 0 <= A <= B
- SolidSnake
- · Replies 4 ·
How do you find the domain of function operations?
- xnonamex0206
- · Replies 4 ·
Dividing polynomials (x³-4x²+5x-2) by (x-1)
- lion89
- · Replies 2 ·
What is the standard matrix for T: R^2-->R2?
- Gramsci
- · Replies 21 ·
7x7 system of linear equations via Gauss-Jordan elimination
- dudeweresdeth
- · Replies 1 ·
Relative error of x² and e^x in floating point arithmetic
- yenbibi
- · Replies 1 ·
How Accurate is Approximating Sine with Its Series Terms?
- yenbibi
- · Replies 2 ·
How Are Circular Permutations of Indistinguishable Objects Calculated?
- ritwik06
- · Replies 4 ·