Precalculus Mathematics Homework Help Forum

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

Difficult maths problem - requires some thought

  • david18
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2

Question from Lin Al quiz I'm pretty sure I got wrong.

  • moe darklight
  • · Replies 7 ·
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7

Solving for sin(xi): A Mathematical Exploration

  • epkid08
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1

Solving for Y in Degrees: Step-by-Step Guide and Examples

  • joe215
  • · Replies 1 ·
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1

[Statistic] NCE or just usual z-score?

  • master cherundo
  • · Replies 4 ·
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4

Relatively easy simplification

  • thrill3rnit3
  • · Replies 5 ·
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5

How Do You Solve This Logarithmic Equation for X?

  • rich6490
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1

Solving Inequalities: x Range & Answers

  • jvignacio
  • · Replies 6 ·
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6

Solve Basic Word Problem: Find Coins & Combos for $3.00

  • war485
  • · Replies 4 ·
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4

Help Solve a Math Problem: Find the Conjugate of 2-5i

  • Ersatz
  • · Replies 5 ·
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5

Understanding the Equation (2n-1)! = (2n-1)(2n)(2n-1)!

  • fiziksfun
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3
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1

Contrapositive Proof of Positive x & y: x^n<y^n implies x<y

  • garyljc
  • · Replies 7 ·
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7

What is the method for finding the volume of a trapezoidal shape?

  • drdizzard
  • · Replies 3 ·
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3

Calculating the Mass & Comp. of Methanol Mixtures

  • yoleven
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2

Help finding a inverse function

  • farmd684
  • · Replies 3 ·
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3

What is the locus of R for PQ as a focal chord?

  • Mentallic
  • · Replies 6 ·
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6

Proving the Binomial Theorem: Simplifying 3^k C(n,k) = 2^2n

  • jenny Downer
  • · Replies 1 ·
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1

Group like terms factoring problem

  • kuahji
  • · Replies 2 ·
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2

What is the sum of integers from 1 to n with r = 1 if n = 20?

  • tharindhudg
  • · Replies 5 ·
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5

Inverse of the difference of two matrices A and B

  • yukawa
  • · Replies 3 ·
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3

Describing derivatives in practical terms

  • madgab89
  • · Replies 3 ·
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3

Sum of invertible matrices is invertible?

  • soul5
  • · Replies 1 ·
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1
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3

Website Title: Calculating Angles Between Vectors in Three Dimensions

  • enryiggins
  • · Replies 3 ·
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3

Probability: # of Permutations from r Choices of n Objects

  • Michael Si
  • · Replies 2 ·
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2

Re: Sum of infinite series - 1/n^2

  • obelu
  • · Replies 3 ·
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3

Solve 5√x ≥ 625 Exponential Inequality

  • enibaraliu
  • · Replies 7 ·
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7

Yes, that is correct. The sequence is convergent for n>1, but not for n=1.

  • Physicsissuef
  • · Replies 3 ·
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3
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1

Solve Radical Equation: -4/9(x^9)[(3/x^2)-(1/(2^1/3))] when x = 2^1/6

  • DecayProduct
  • · Replies 2 ·
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2

Laplace's equation on an annulus

  • Niles
  • · Replies 14 ·
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14

Linear Algebra: If AX=B, and X and B are known, find A.

  • jumbogala
  • · Replies 7 ·
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7

Venn Diagram Problem: Survey of 50 Students' Preferences

  • korr2221
  • · Replies 3 ·
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3

Eh? How do I solve xe^(a/x) = b?

  • WarPhalange
  • · Replies 4 ·
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4

Expressions without absolute value signs

  • garyljc
  • · Replies 4 ·
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4

Is the Inequality a+b <= a^2/b + b^2/a Easy to Prove?

  • nicksauce
  • · Replies 4 ·
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4
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1

Solve x = \sqrt{4 - 3x} Equation

  • Sheneron
  • · Replies 3 ·
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3

How Do You Solve Complex Exponential Inequalities?

  • enibaraliu
  • · Replies 3 ·
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3

A natural log inequality with absolute value

  • gabrooo
  • · Replies 3 ·
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3

Trouble with Logarithmic Equations: Help Needed for 5 Questions

  • JBD2
  • · Replies 3 ·
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3

Spot Student Mistakes: 1/x < x < 1

  • garyljc
  • · Replies 5 ·
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5

Multiplicative Inverse Manipulation Valid?

  • snipez90
  • · Replies 4 ·
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4

Analyzing if 'x<y ⇒ x^2<y^2': What Axiom to Use?

  • garyljc
  • · Replies 11 ·
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11
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1

Help solving a third degree polynomial

  • jeffmarina
  • · Replies 7 ·
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7
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4

Trig Conversion: Learn How to Go from One Form to the Other

  • hayesk85
  • · Replies 1 ·
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1
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5

Solve simple logarithmic question

  • preet
  • · Replies 2 ·
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2

Solve Factoring Problems: 2 Examples

  • theout
  • · Replies 2 ·
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2

Finding variance without knowing mean?

  • MadMike1986
  • · Replies 4 ·
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4

Is This Proof that 1=2 Valid or Fallacious?

  • Enjoicube
  • · Replies 4 ·
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4

Show (x^3+2x)/(2x+1) < x^2 as x -> infinite

  • RogerDodgr
  • · Replies 2 ·
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2

Finding Asymptotes for a Rational Function

  • Mentallic
  • · Replies 8 ·
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8

Algebra (easy for you, difficult for me)

  • synthetic.
  • · Replies 5 ·
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5

How Do You Solve the Quadratic Equation \( X^2(2a - bX^2) = 2 \)?

  • abhipatel
  • · Replies 2 ·
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2

Exponential equations homework

  • enibaraliu
  • · Replies 3 ·
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3

Mastering Logarithms: Solving Equations with Logarithmic Functions

  • nikita33
  • · Replies 4 ·
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4

College algebra question. inequalities interval

  • camilus
  • · Replies 1 ·
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1

Confidence limits of expected odds

  • Andrusko
  • · Replies 2 ·
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2

Calculating Percent Yield: C₉H₈O₄ ± 5.8%

  • Saturnfirefly
  • · Replies 2 ·
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2

A few areas of algebra I don't understand

  • MadmanMurray
  • · Replies 6 ·
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6

Need help with the general form of an circle

  • alexm544
  • · Replies 5 ·
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5

Limits and Free Falling Objects

  • pippintook
  • · Replies 1 ·
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1

Solving Cubic Equations: Finding the Roots

  • Petkovsky
  • · Replies 3 ·
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3

Solving 8log27 and log3x2 = log481/2 without a Calculator

  • musicfairy
  • · Replies 9 ·
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9

Induction question with logarithms

  • Petkovsky
  • · Replies 4 ·
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4

Find theta: Solving csc & ctn Equations with x-6 & x+5

  • lucifer_x
  • · Replies 3 ·
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3

Proving the Inverse of a 2x2 Matrix Using Row Operations

  • forty
  • · Replies 4 ·
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4

Need genius to help find pattern in these numbers please?

  • swimchick1993
  • · Replies 6 ·
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6

Finding the Range of $\frac{x-5}{x^{2}-9}$

  • BoundByAxioms
  • · Replies 11 ·
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11

Proof: Matrix A^-1 = -(1/3)((A^2) -2A -4I)

  • forty
  • · Replies 2 ·
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2

Proving AB and BA are Square Matrices

  • forty
  • · Replies 2 ·
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2

Calculate 3d vector from angles with respect to x and y axis

  • nuggets
  • · Replies 4 ·
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4

Simplify the following equation for n 1

  • roeb
  • · Replies 3 ·
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3

Stan Mows Lawn Alone: Math Problem Solution

  • joanne1218
  • · Replies 2 ·
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2

Finding a parabola given two x intercepts

  • revoz
  • · Replies 3 ·
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3

How do you factor a cube to identify asymptotes and holes in graphs?

  • hayesk85
  • · Replies 3 ·
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3

How do I model with equations for pre-calculus?

  • davis808
  • · Replies 1 ·
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1

Plotting Vector Field: V=(xi+yj+zk)/\sqrt{}(x^2+y^2+z^2)

  • mite
  • · Replies 2 ·
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2
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2
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4

Question on a step in my proof.

  • Diffy
  • · Replies 8 ·
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8

How Does Dividing Both Sides by (Y/L)α Transform the Production Function?

  • albert2008
  • · Replies 3 ·
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3

Can You Solve the Equation (3^x) - (3^-x) = 4?

  • rise
  • · Replies 6 ·
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6

How Do You Solve for a Linear Function Where f(f(x)) Equals 4x + 3?

  • Gray Matter
  • · Replies 1 ·
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1

Finding Prime & Composite Numbers Using x Squared -x+41

  • yomamacjo
  • · Replies 3 ·
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3

What is the order of these functions

  • Gear2d
  • · Replies 4 ·
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4

Partially filled frustum of cone

  • polyperson
  • · Replies 17 ·
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17

Find Tangents to Parabola Passing Through Point A (5,-2)

  • Mentallic
  • · Replies 3 ·
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3

AM-GM Inequality: Prove 0 <= A <= B

  • SolidSnake
  • · Replies 4 ·
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4

Finding Domain of f(x) & g(x) Equations

  • xnonamex0206
  • · Replies 4 ·
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4

Solve Quadratic Equation (x³-4x²+5x-2):(x-1)= x²- 2x-8 | Need Help?

  • lion89
  • · Replies 2 ·
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2

What is the standard matrix for T: R^2-->R2?

  • Gramsci
  • · Replies 21 ·
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21

Help with 7x7 gauss jordan elimination program

  • dudeweresdeth
  • · Replies 1 ·
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1

Relative Error of Elementary Functions: Examining f(x) = x2 & ex

  • yenbibi
  • · Replies 1 ·
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1

How Accurate is Approximating Sine with Its Series Terms?

  • yenbibi
  • · Replies 2 ·
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2

How Are Circular Permutations of Indistinguishable Objects Calculated?

  • ritwik06
  • · Replies 4 ·
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4