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

How to solve x*a^x=b with math reasoning?

  • raul_l
  • · Replies 4 ·
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4

How Can You Prove the Angle XCB is 90 Degrees in a Parallelogram?

  • ngkamsengpeter
  • · Replies 12 ·
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12

Solving -sin(x)-2cos(2x)=0 for x in [0,2π]

  • verd
  • · Replies 15 ·
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15

Are GPA and Skipped Classes Related Through Conditional Probabilities?

  • froggy
  • · Replies 1 ·
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1

Which of these simpifications is correct?

  • bill nye scienceguy!
  • · Replies 3 ·
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3

Linear Algebra augmented matrix

  • ultima9999
  • · Replies 8 ·
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8

Finding the angle between a radius and the x-axis in a circle

  • oooo
  • · Replies 2 ·
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2

What is the Domain of x^2-6x+9 / x^2?

  • Rusho
  • · Replies 6 ·
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6

Finding a Heading and Trip Time From City A to City B

  • James_fl
  • · Replies 1 ·
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1

Why Do Logarithmic Graphs Vary Despite Similar Equations?

  • SwAnK
  • · Replies 2 ·
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2

What is the Value of f(43) for a Function with a Period of 12?

  • Aya
  • · Replies 7 ·
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7
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6

What is the formula to find the Zeros of this?

  • konartist
  • · Replies 11 ·
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11

Proving three trigonometric identities with cos³X and cotX

  • thunder
  • · Replies 13 ·
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13

How can you rationalize the denominator of a fraction with a radical?

  • Richay
  • · Replies 10 ·
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10

How Do You Calculate the Inverse of a 2x2 Matrix?

  • lakitu
  • · Replies 9 ·
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9
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3

How to evaluate a 3x1 matrix

  • lakitu
  • · Replies 6 ·
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6

Simplifying Algebra: Grade 11 Maths Q

  • jamie_23
  • · Replies 6 ·
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6

Solving Matrices Question: Evaluate AB

  • lakitu
  • · Replies 2 ·
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2

Find the approximate annual percentage rate

  • KRISTENJ
  • · Replies 1 ·
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1

Counterexamples for injectivity and surjectivity of product functions

  • JasonJo
  • · Replies 6 ·
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6

Question on a formula for Pascal's Triangle

  • smallbadwolf
  • · Replies 7 ·
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7

Vectors - show that the lines intersect

  • smn
  • · Replies 11 ·
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11

When will $800 at 8% equal $1000 at 6% compound interest?

  • ohlhauc1
  • · Replies 3 ·
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3

How Do You Draw and Calculate Unit Vectors for Gradients?

  • hexa
  • · Replies 2 ·
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2

Solving Algebra Equation: 3y + (y*Pie)/2 = 62

  • Stilts
  • · Replies 6 ·
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6

Sketch Graphs of y= (1-x)x^1/2, y^2 = (1-x)x^1/2, etc. - Sparsh

  • sparsh
  • · Replies 13 ·
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13
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5

Can you find the general formula for A_n+3?

  • kezman
  • · Replies 8 ·
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8

How Do You Visualize a Vector Field Like v(x, y) = (2.5, -x)?

  • hexa
  • · Replies 1 ·
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1

Solve x^2 + (-1/2x + 5)^2 = 25

  • Spruance
  • · Replies 3 ·
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3

Finding the error in a multi-step linear equation for A

  • Andreii
  • · Replies 16 ·
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16

Another proof: Do I still have more work to do?

  • GregA
  • · Replies 13 ·
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13

How Do You Calculate the Probability of Multiple Seeds Sprouting?

  • orchdork89
  • · Replies 8 ·
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8

What's wrong with my proof of |z + z̄| ≤ 2|z|?

  • ramble
  • · Replies 7 ·
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7

Powers of sums/Fractional exponents

  • Richay
  • · Replies 7 ·
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7

Finding distance from a point to a plane using vectors

  • fanizza2
  • · Replies 3 ·
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3

Contour: Constructing a Contour Map from h(x,y) = x^2 + y

  • hexa
  • · Replies 2 ·
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2

Geometry (circles and triangles) proofs

  • Beam me down
  • · Replies 9 ·
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9

Proof By Induction (simple one for all but me)

  • GregA
  • · Replies 2 ·
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2

Switching Order of Indices in Summation Notation

  • Benny
  • · Replies 6 ·
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6
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1

Finding unknown functions in composite function equations

  • F.B
  • · Replies 2 ·
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2

Different forms of linear equations

  • Beam me down
  • · Replies 3 ·
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3
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1

Why does using b=67 give the wrong answer for plane velocity?

  • danago
  • · Replies 8 ·
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8

What is the difference between density and distribution?

  • loom91
  • · Replies 2 ·
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2

Savings account simple interest problem

  • heels_overhead
  • · Replies 7 ·
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7

Rate of change from 0 to x 2x^2 + 3x

  • Rusho
  • · Replies 8 ·
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8

Two boats moving along straight paths with position vectors

  • danago
  • · Replies 7 ·
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7

Geometry: Area of Trapezoid Circumscribed About A Circle

  • Yuki
  • · Replies 2 ·
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2

When does the inverse of g(x)=4(x-3)^2+1 fail to be a function?

  • msimard8
  • · Replies 2 ·
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2

Cubic function factored with zeroes

  • endeavor
  • · Replies 12 ·
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12

Rate of change from 1 to 2 for f(x)=2x^3 + x

  • Rusho
  • · Replies 12 ·
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12

I need to find a unit vector perpendicular to vector b

  • danago
  • · Replies 10 ·
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10

Discriminants - When will a quadratic equation have 2 real solutions

  • danago
  • · Replies 4 ·
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4

An exponential problem and a trig problem

  • Kb1jij
  • · Replies 7 ·
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7

CONSTRUCTIONS of a+b,ab,a/b,a-b, a^(1/2)

  • calvino
  • · Replies 1 ·
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1

Imaginary numbers entertwined with quadratics

  • runicle
  • · Replies 9 ·
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9

Is There a Trick to Solve for Theta in this Algebraic Equation?

  • scavok
  • · Replies 3 ·
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3

How can exponents be simplified?

  • Thunderer
  • · Replies 2 ·
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2

Are Functions Continuous at a Cusp or Corner?

  • Rozy
  • · Replies 4 ·
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4

How Do You Calculate the Altitude of a Plane Using Trigonometry and Speed?

  • physstudent1
  • · Replies 1 ·
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1

Finding surface area of a sphere

  • bblueblob
  • · Replies 4 ·
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4

Can some put this into an equation

  • smbascug
  • · Replies 1 ·
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1

Linear equations from two and four points on a plane

  • lezardo
  • · Replies 2 ·
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2

Find the range for the function

  • jesuslovesu
  • · Replies 2 ·
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2

Finding m in quadratic equation 12x^2 + 8mx + (4m-3) = 0

  • danago
  • · Replies 2 ·
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2

Solving cubic equation with matrices

  • Beam me down
  • · Replies 3 ·
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3

Problem Solving with Probability

  • Raza
  • · Replies 7 ·
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7
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1

Simplifying factorial expressions without factorial symbols

  • funktion
  • · Replies 7 ·
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7

Multiplying Rational Expressions

  • wScott
  • · Replies 3 ·
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3
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2

Finding the Point of Tangency Theoretically

  • SwAnK
  • · Replies 3 ·
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3

Proving A,B and C are Collinear

  • danago
  • · Replies 5 ·
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5

How does Euclid's algorithm work with modulo n remainders?

  • skook
  • · Replies 1 ·
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1

Finding the discriminant and roots of y = x^2-8x+7

  • Joebird
  • · Replies 15 ·
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15

Finding how many students passed both maths and French

  • John O' Meara
  • · Replies 3 ·
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3

Solving a Polynomial Equation using quadratic techniques.

  • alancj
  • · Replies 21 ·
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21

Drawing ambiguous triangles with law of sines and cosines

  • Cosmo16
  • · Replies 8 ·
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8

Fixed Points and Critical Points in Continuous Scalar Functions

  • Benny
  • · Replies 3 ·
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3

Separating variables in differential equations

  • kape
  • · Replies 3 ·
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3

Natural log real life application

  • Nerpilis
  • · Replies 5 ·
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5

Evaluating Tanx + Cosx/Sinx = Secx + Cotx

  • heelp
  • · Replies 2 ·
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2

Flight Matrix: Passenger Count and Ticket Prices for Paris Flights

  • John O' Meara
  • · Replies 1 ·
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1

Finding Mars' maximum orbital distance from eccentricity

  • sportsguy3675
  • · Replies 17 ·
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17

Nightmares with formal proofs in set theory

  • JasonJo
  • · Replies 3 ·
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3

Possible imaginary zeros of x^4+3x^3+7x^2-6x-13

  • alancj
  • · Replies 20 ·
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20

Trying to teach myself equations

  • Vincent Vega
  • · Replies 20 ·
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20

Limit as x approaches k of (x√x - k√k)/(x⁴ - k⁴)

  • mohlam12
  • · Replies 10 ·
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10

Exponential problem with E. coli

  • rachael
  • · Replies 5 ·
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5

How Do You Prove Power Set Equations for Sets A and B?

  • JasonJo
  • · Replies 3 ·
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3

How Do I Graph the Exponential Decay of Sugar in Water?

  • rachael
  • · Replies 2 ·
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2

Differntiating natural logs of x and y functions

  • bob4000
  • · Replies 6 ·
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6

Solve Linear Programming Problem: Maximize File Storage

  • dnt
  • · Replies 5 ·
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5

Simplifying sin(3pi/2-x): An Exploration

  • rachael
  • · Replies 6 ·
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6

Tangent Line Equation for f(x) = √x+1 Parallel to x-6y+4=0

  • Christina-
  • · Replies 4 ·
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4

How Does the Function x/(x^2-4) Behave at Infinity?

  • soggybread
  • · Replies 1 ·
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1