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

Is there an explicit way to write the solution of nx = e^x?

  • Hiero
  • · Replies 3 ·
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3

Does g(x,t) = cos(kx − ωt + ε) lag behind f(x,t)?

  • Pushoam
  • · Replies 1 ·
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1

Does x = -1 Make the Function FoG Undefined Even If Part of It Equals Zero?

  • Rijad Hadzic
  • · Replies 9 ·
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9

Find the length of PR and the bearing of P from R

  • Richie Smash
  • · Replies 6 ·
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6

Find the point of intersection?

  • Math100
  • · Replies 3 ·
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3

Is a function with range as a subset of B injective?

  • alijan kk
  • · Replies 18 ·
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18

Single matrix for reflection in y=x then 90° rotation

  • Richie Smash
  • · Replies 10 ·
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10

Problem with a product of 2 remainders (polynomials)

  • another_dude
  • · Replies 4 ·
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4

Probability of Getting Head or 4: 7/12

  • alijan kk
  • · Replies 5 ·
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5
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31

Find the value of beta in degrees

  • Richie Smash
  • · Replies 9 ·
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9
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2

Order of permutations in transformations of functions

  • opus
  • · Replies 11 ·
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11

Triangle altitude's concurrency by symmetry

  • alijan kk
  • · Replies 8 ·
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8

Equation of Circle Passing Through Given Point and Line with Given Radius

  • alijan kk
  • · Replies 6 ·
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6

Value of x for which f(x) is undefined

  • Richie Smash
  • · Replies 13 ·
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13

Find the value of alpha and beta (matrix equation)

  • Richie Smash
  • · Replies 15 ·
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15

How Big Must N Be for Stirling's Formula to Achieve 2% Accuracy?

  • Physgeek64
  • · Replies 11 ·
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11

Finding when boat Q is northeast of boat P

  • lioric
  • · Replies 63 ·
3
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63

Find the speed of the batsman and direction he takes (vectors)

  • Richie Smash
  • · Replies 3 ·
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3

How to solve a percentage word problem for profit?

  • alijan kk
  • · Replies 15 ·
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15

Area of a Sector- Why squared?

  • opus
  • · Replies 7 ·
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7

How Many Distinct Color Patterns Can an Octahedron Have?

  • bradleyharmon
  • · Replies 1 ·
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1

Finding Complement of a set with respect to space U

  • RJLiberator
  • · Replies 5 ·
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5

How to find the time for A and B working together to complete a job

  • alijan kk
  • · Replies 7 ·
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7
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1

Train Speed: 150m in 25 sec - Find Length

  • alijan kk
  • · Replies 3 ·
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3

Inequality to represent minimum monthly income.

  • Richie Smash
  • · Replies 6 ·
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6

Principal stresses 3D, solving for direction cosines n1,m1,n1

  • jan2re
  • · Replies 14 ·
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14

Velocity Vectors of a Boat Relative to the Shore and River

  • s3a
  • · Replies 1 ·
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1

Surface area of a cylinder- finding unknown variable

  • opus
  • · Replies 2 ·
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2

Why is the second piece of a piecewise function (3,5) instead of [3,5]?

  • Rijad Hadzic
  • · Replies 4 ·
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4

Suitable range of values for x

  • Richie Smash
  • · Replies 10 ·
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10

Poisson Distribution -- Rental of a number of television sets

  • songoku
  • · Replies 13 ·
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13

Understanding Quotients in Equations

  • Richie Smash
  • · Replies 28 ·
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28

Trigonometry- Converting from DMS to DD and rounding

  • opus
  • · Replies 4 ·
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4

Difference method for summing (2n-1)/(2n²(n-1)²)

  • Enelafoxa
  • · Replies 14 ·
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14

Is Proof of A Subset of Union of Family Valid?

  • bubblescript
  • · Replies 4 ·
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4

Probability that both people are from group X

  • jaus tail
  • · Replies 18 ·
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18

Strategies for Solving Complex Addition Problems

  • Helly123
  • · Replies 4 ·
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4

Solving trig equation with TI Ispire CX

  • Sunwoo Bae
  • · Replies 6 ·
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6

Solving cos(2x) + cos(x) = 0 for 0° to 360°

  • Helly123
  • · Replies 12 ·
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12

Checking the steel weight calculation formula

  • MachineMfg
  • · Replies 2 ·
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2

Triangle inscribed in a circle

  • Kolika28
  • · Replies 16 ·
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16

Solving log₂√(2x-1) < log₄x inequality

  • Helly123
  • · Replies 6 ·
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6

Solving for the third one should be straightforward.

  • Tonyb24
  • · Replies 10 ·
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10

How Do You Simplify Trigonometric Expressions Using Basic Identities?

  • Jen23
  • · Replies 5 ·
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5

How Do Eigenvalues and Eigenvectors Change for Matrix B = exp(3A) + 5I?

  • Physgeek64
  • · Replies 14 ·
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14

Show that 1/2(sin(2x)+1) = sin²(x+π/4)

  • Adgorn
  • · Replies 4 ·
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4

How to check if a transformation is surjective and injective

  • caspeerrr
  • · Replies 4 ·
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4

What are the probabilities for events A and B in a set of 10 cards?

  • brake4country
  • · Replies 3 ·
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3

Calculating Distances Along Latitudes on Earth

  • DS2C
  • · Replies 8 ·
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8

Find roots of quadratic equation with parameters a, b, c

  • loveinla
  • · Replies 7 ·
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7

What is the remainder when -3x^3 + 5x - 2 is divided by x?

  • Jen23
  • · Replies 7 ·
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7

Simplification of a complex exponential

  • fonz
  • · Replies 9 ·
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9

Factoring 3x^3 + 2x^2 + 75x - 50 = 0

  • Jen23
  • · Replies 17 ·
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17

Calculate speed according to distance, gravity and h-angle.

  • Swedky
  • · Replies 4 ·
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4

Prove that if a² + ab + b² = 0 then a = 0 and b = 0

  • CynicusRex
  • · Replies 39 ·
2
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39
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2

Why do two applications of the law of sines give different angles?

  • Aidyan
  • · Replies 5 ·
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5

Are the Sets {r, -r, 0} and {-r, r, 0} Identical?

  • Rijad Hadzic
  • · Replies 4 ·
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4

Finding the Number of Classes Attended Based on Minutes and Cost

  • zak100
  • · Replies 7 ·
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7

What are the elements of set X?

  • zak100
  • · Replies 2 ·
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2

Solving Systems of Linear Equations in Two Variables- Graphs

  • DS2C
  • · Replies 6 ·
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6

Find largest number of linearly dependent vectors among these 6 vectors

  • Mohamed Abdul
  • · Replies 14 ·
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14

Derivation of Bernoulli Binomial distribution

  • Pushoam
  • · Replies 15 ·
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15

Proving Complex Number Equality

  • squenshl
  • · Replies 5 ·
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5

Solution of an exponential equation

  • Ali Baig
  • · Replies 2 ·
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2

Applying hypothesis test data collected (Statistics)

  • Dusty912
  • · Replies 3 ·
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3

Find Real Values of k for Purely Real ##u##

  • squenshl
  • · Replies 3 ·
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3

Interior and Exterior Angle of a Polygon: Formula not working

  • zak100
  • · Replies 3 ·
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3

Find a basis for R2 that includes the vector (1,2)

  • Rijad Hadzic
  • · Replies 16 ·
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16

Proof about cycle with odd length

  • fishturtle1
  • · Replies 4 ·
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4

Chess board probability

  • Tanishq Nandan
  • · Replies 11 ·
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11

Probability of getting an ace in case of a loaded die

  • Pushoam
  • · Replies 11 ·
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11

How Many Machines Are in the Factory to Meet Production Requirements?

  • nightingale123
  • · Replies 5 ·
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5

Height of an island beyond the horizon

  • fizixfan
  • · Replies 23 ·
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23

Number divided by something divided by something?

  • Hammad Shahid
  • · Replies 16 ·
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16

Inverse of a Cycle: Proof of Inverse Cycles and Powers

  • fishturtle1
  • · Replies 3 ·
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3

Finding the Half-Life of a Radioactive Element

  • Conrad Peterson
  • · Replies 5 ·
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5

What's the standard deviation of values in the histogram bar

  • whatisreality
  • · Replies 2 ·
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2

Can a Scalar Multiple of a Basis Still Form a Basis?

  • Rijad Hadzic
  • · Replies 5 ·
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5

Integer programming model (alternating constraints)

  • fishturtle1
  • · Replies 5 ·
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5

Knapsack problem constraints with dependencies

  • fishturtle1
  • · Replies 11 ·
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11

Squaring both sides of an equation- extraneous solutions

  • DS2C
  • · Replies 8 ·
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8

Reducing a matrix to echelon form

  • Mohamed Abdul
  • · Replies 3 ·
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3

Constructing a 3x3 Linear system question

  • Mohamed Abdul
  • · Replies 4 ·
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4

Finding values to make a linear system consistent

  • Mohamed Abdul
  • · Replies 6 ·
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6

Coefficients that make Gaussian elimination impossible?

  • Mohamed Abdul
  • · Replies 5 ·
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5

Heat conduction through a layers of different materials

  • curiosity colour
  • · Replies 3 ·
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3

Simplification of complex expression

  • roam
  • · Replies 3 ·
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3

Rational expressions and domains

  • PhyiscsisNeat
  • · Replies 5 ·
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5

Multiplying Algebraic Fractional Exponents

  • Svetlana_Vein
  • · Replies 1 ·
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1

Clearing decimals by multiplication in an equation

  • DS2C
  • · Replies 8 ·
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8

Geometry: Solve for angles of a triangle w/line intersecting

  • Jacob Dale
  • · Replies 2 ·
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2

When is √(x+5) + ∛(x/4) positive or negative?

  • Alex126
  • · Replies 1 ·
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1

Where will the pendulum land -- Probability Question

  • Barclay
  • · Replies 19 ·
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19

Transforming Piecewise Functions

  • Mjucewitz
  • · Replies 3 ·
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3

Graphic in excel for practicum

  • alkgeo
  • · Replies 4 ·
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4
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10