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

Show that a Sequence is monotonically decreasing

  • Calu
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3

How Long Until Superman Regains His Powers?

  • Yohan Lee
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2

Poisson, Binomial Distributions

  • Millacol88
  • · Replies 1 ·
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1

How Does the Central Limit Theorem Apply to Processing Times?

  • Millacol88
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1

{statics} Kvartil (quartiles) why I didnt get right solution ?

  • artiny
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1

Distributing m toys and k candy to 12 children

  • Regina Fillange
  • · Replies 7 ·
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7

Finding the Limit of (cos(Pi/2x))^2x when x is ∞

  • Frank Einstein
  • · Replies 1 ·
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1

Proving Non-Existence of Solutions to a Small Number Theory Problem

  • mafagafo
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8

Proving 1 + 2 + 2^2 + ... + 2^(n-1) = 2^n - 1 by induction

  • Math325
  • · Replies 3 ·
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3

Indicating Vector Inclusion in Span of Matrix Columns

  • mafagafo
  • · Replies 6 ·
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6

Factoring a third degree polynomial

  • Ibraheem
  • · Replies 6 ·
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6

Logical argument with hypotheses about a, b, c, d, e and conclusion not e

  • Jennifer_T
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2

Solving for k and m in f(x) = kx+m

  • Rectifier
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1

Birthday problem with repetitions

  • wintermute++
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2

Finding at which point multiplied numbers coalesce

  • ignorant2
  • · Replies 2 ·
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2

Partial Fraction Decomposition—Multiple Variables

  • END
  • · Replies 2 ·
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2

Finding vector w from 5u + 4v with given components

  • sarabee
  • · Replies 11 ·
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11

Linear equation strange problem

  • Rectifier
  • · Replies 2 ·
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2

Multiplying a trinomial by a binomial with FOIL

  • bballwaterboy
  • · Replies 4 ·
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4

The angle between a line and a plane

  • mafagafo
  • · Replies 18 ·
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18

A question on mathematics of finance [Simple interest]

  • mech-eng
  • · Replies 7 ·
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7

Express (2n+1)(2n+3)(2n+5) (4n-3)(4n-1) in factorials

  • VinnyW
  • · Replies 3 ·
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3

Geometry question form ax^2+bx+c

  • Daaniyaal
  • · Replies 5 ·
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5

Proof of a property of the cross product

  • mafagafo
  • · Replies 11 ·
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11

Finding the X-intercept of a function

  • Airp
  • · Replies 4 ·
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4

Equilateral triangle ABC is inscribed in a circle

  • dawo0
  • · Replies 11 ·
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11

Solving a complex numbered cubic equation

  • PcumP_Ravenclaw
  • · Replies 4 ·
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4

Counting 8-card sequences with specific card type requirements

  • PFuser1232
  • · Replies 7 ·
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7

Shorten equations with math notations?

  • BadatPhysicsguy
  • · Replies 3 ·
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3

Slope of Linear function

  • Ibraheem
  • · Replies 7 ·
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7

Why does sup inf (ak × bk) ≥ sup inf ak × sup inf bk?

  • usernot
  • · Replies 1 ·
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1

Possible combinations of functions

  • nuuskur
  • · Replies 20 ·
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20

Maximum value of x in 81^5 > 32^x

  • ubergewehr273
  • · Replies 3 ·
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3

Solving 4(5^x) - 3(0.4^(2x)) = 11

  • TheExibo
  • · Replies 4 ·
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4

Stats Problem using Stirling's Approx.

  • wintermute++
  • · Replies 8 ·
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8

Why Fermat's little theorem not working here

  • 22990atinesh
  • · Replies 6 ·
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6

Minimum numbers of balls to be drawn

  • usha
  • · Replies 2 ·
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2

How to find Remainder of this expression?

  • 22990atinesh
  • · Replies 10 ·
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10

Does Taylor Series accurately represent limits in calculus?

  • ironman
  • · Replies 1 ·
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1

Finding the limit of (4−√(18−x))/(x−2) as x→2

  • Ritzycat
  • · Replies 11 ·
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11

What does the centered dot notation x(·) mean?

  • emergentecon
  • · Replies 8 ·
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8

How to Do (f o g)(1) Function Problem?

  • bballwaterboy
  • · Replies 3 ·
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3

Arc length of intersecting circles

  • ArcanaNoir
  • · Replies 3 ·
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3

Finding P(B) and P(A/B) given conditional probabilities

  • chwala
  • · Replies 4 ·
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4

Lagrange Points Calculation Work

  • Samuelriesterer
  • · Replies 2 ·
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2

Proving least upper bound property implies greatest lower bound property

  • schlynn
  • · Replies 22 ·
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22

The area of a square with right triangle inside it

  • JasonHathaway
  • · Replies 6 ·
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6

How Retirement Changes Affect Unemployment Rates

  • s3a
  • · Replies 4 ·
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4

Constructing Four Isosceles Trapezoids

  • Bashyboy
  • · Replies 12 ·
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12

Derivation of mapping for isometric rotation about i

  • PcumP_Ravenclaw
  • · Replies 3 ·
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3

Clocks and their relative speeds

  • mpx86
  • · Replies 2 ·
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2

Finding p and q for rhombus ABCD with vertices A(7,0), C(1,2), D(2,-5)

  • desmond iking
  • · Replies 4 ·
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4

How do I simplify this expression using exponent rules?

  • christian0710
  • · Replies 4 ·
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4

Proving uniqueness of natural number successors using induction

  • HMPARTICLE
  • · Replies 6 ·
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6

Find the Pattern in 3+6+12+20+30 +n

  • ChiralWaltz
  • · Replies 7 ·
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7

Is Addition Associative? A Proof Using Induction

  • HMPARTICLE
  • · Replies 6 ·
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6
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2

Finding parameters a, b, k for cotangent and tangent functions

  • Niaboc67
  • · Replies 2 ·
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2

Solving cos(ωt) = 1 - e^(-t/RC) for t

  • iScience
  • · Replies 3 ·
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3

All subgroups of {1, 2, 4, 8, 16, 32, 43, 64} under multiplication mod 85

  • HMPARTICLE
  • · Replies 6 ·
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6

What is the meaning of Λ in the contingency equation?

  • RabbitWho
  • · Replies 2 ·
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2

Static cable car, approximate tensions

  • bobred
  • · Replies 20 ·
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20

Would someone be able to isolate v?

  • terff
  • · Replies 6 ·
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6
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5

Finding coefficient ratio A₆/A₁₄ in (2x² + 3x + 4)¹⁰

  • erisedk
  • · Replies 2 ·
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2

Permutations and Combinations: Distributing Balls Among People

  • erisedk
  • · Replies 4 ·
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4

Generel Solution of sinx+cos^2 x= 1

  • Superposed_Cat
  • · Replies 8 ·
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8

Why does sin(35°) equal both a side ratio and a y-coordinate?

  • christian0710
  • · Replies 1 ·
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1

Finding intersection when union is 42 and A has twice B's elements

  • Panphobia
  • · Replies 4 ·
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4

Deducing sums such as 1+2+3+ .+100

  • Natasha1
  • · Replies 14 ·
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14

Find the next three numbers in 4, 16, 21, 21, 18, 14, 11

  • Natasha1
  • · Replies 11 ·
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11

Is the Solution to the Absolute Value Inequality x^2<4 then |x|<=2 Correct?

  • OceanSpring
  • · Replies 2 ·
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2

Binomial expansion- divisibility

  • erisedk
  • · Replies 1 ·
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1
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2

Why Are Discounted and Net Cash Flow Calculations Different?

  • IrinaK.
  • · Replies 12 ·
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12
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5

Exponential revision question I can't work out?

  • Ramjam
  • · Replies 35 ·
2
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35

Trigonometric Identity for Solving Sin Cubed Equations

  • Yashbhatt
  • · Replies 15 ·
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15
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14

Can a Ship Enter a Harbor? Calculating Depth Using h(t) = 3 + 2sin(0.5236t)

  • BadatPhysicsguy
  • · Replies 2 ·
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2

Is Every Set in ℝ3 a Subspace?

  • MarcL
  • · Replies 11 ·
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11

Binomial Expansion Coefficient of x^n

  • erisedk
  • · Replies 14 ·
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14

Trig, how long is the graph under y=0

  • BadatPhysicsguy
  • · Replies 3 ·
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3

Gravitational acceleration, cosine problem

  • BadatPhysicsguy
  • · Replies 4 ·
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4

Geometric distribution Problem

  • throneoo
  • · Replies 5 ·
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5

Uniform Discrete Sample Distribution

  • Lifprasir
  • · Replies 6 ·
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6

Probability - 3 Independent Events

  • jmc
  • · Replies 10 ·
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10

Bezout identity corollary generalization

  • davon806
  • · Replies 1 ·
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1

Logarithms and scientific calculator

  • ilii
  • · Replies 5 ·
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5

How many ways can 6 cards be chosen from a deck to have all suits present?

  • Robert Houdart
  • · Replies 11 ·
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11

Combinatorics - No two together

  • Yashbhatt
  • · Replies 8 ·
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8

What Values of k Give Infinite Solutions in This Homogeneous System?

  • Purple94
  • · Replies 12 ·
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12

How many real pairs (x, y) satisfy x² - xy + y² = 4(x + y - 4)?

  • erisedk
  • · Replies 13 ·
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13

Does an arithmetic progression exist with common difference zero?

  • Robert Houdart
  • · Replies 3 ·
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3

How Many Non-Confusing Codes Can Be Formed from Distinct Digits?

  • Robert Houdart
  • · Replies 7 ·
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7

Simplifying (2ab - 3b²)/(3b - 4a)

  • e^(i Pi)+1=0
  • · Replies 2 ·
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2

Proving -(a + b + c) = -a + (-b) + (-c)

  • badateverything
  • · Replies 2 ·
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2

Ptolemy's Theorem: Deriving 2sin(θ/2)

  • PcumP_Ravenclaw
  • · Replies 1 ·
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1

Combinatorics, alphabet/bitstrings

  • Panphobia
  • · Replies 11 ·
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11

Derivation of parametric Equations?

  • Mark Rice
  • · Replies 11 ·
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11