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Precalculus Homework Calculus

11/02/15

Calculus question

Suppose that f : [0, 1] −→ [0, 1] is a continuous function. Prove that f has a fixed point in [0, 1], i.e., there is at least one real number x ∈ [0, 1] such that f(x) = x

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Precalculus Homework Precalculus Pre Calculus Math Help

10/27/15

find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 3, and zeros 4-i and 4i

Find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 3, and zeros 4-i and 4i

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Precalculus Homework

10/13/15

Write the equation of the quadratic function given the following

1. Vertex (2,5) Point: (-1,3) 2. Vertex (2,-3) Point (4,1)

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Precalculus Homework

10/09/15

National Business Machines manufactures x model A portable printers and y model B portable printers. Each model A costs $100 to make, and each model B costs $150. The profits are $45 for each model... more

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Precalculus Homework Precalculus Functions Math Help

10/08/15

Difference Quotient problem with understanding completely: f(x)=1/x^2

f(x)=1/x^2 In utilizing the difference quotient to solve this problem, how would I solve it? Please list in steps as well. Thank you in advance.

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Precalculus Homework

10/06/15

prove the formula for the inverse of a 2x2 matrix

Prove that the matrix [a b] 1 0] is equal to [1 0](d/ad-bc) (-b/ad-bc)] [c d] 0 1] [0 1](-c/ad-bc) (a/ad-bc)]

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Precalculus Homework Math Math Help Algebra 2 Help

10/05/15

-1/2(x-2)^4/3=1-3^2

How would I go about this question in solving for x? Also, what kind of problem would this be considered to practice other similar problems? -1/2(x-2)^4/3=1-3^2

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Precalculus Homework Precalculus Word Problem College

10/05/15

Word problem about driving for 55mi/h to anther city, staying for 25hrs, and driving 45mi/h back. She is back 49 hours after leaving.

Wilma drove at an average speed of 55 mi/h from her home in City A to visit her sister in City B. She stayed in City B 25 hours, and on the trip back averaged 45 mi/h. She returned home 49 hours... more

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Precalculus Homework

09/28/15

Factor: x^3-7x-6= 0

Hello! I am stuck with this question.The only idea I could come up with is to take out the x -> x(x^2-7)-6=0Any help is appreciated!

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Precalculus Homework

09/21/15

Write the function as a composite of two functions f and g. (More than one answer is correct)

f(g(x))= 1/1+x^2 and f(g(x))= √x / 3√x +2

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Precalculus Homework

09/21/15

Show that f(g(x))= x and g(f(x)) =x

f(x)= (5-x) ^1/3 , g(x)= 5-x^3

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Precalculus Homework

09/20/15

Define a function g that gives the area of a circle, A , in terms of the circumference of the circle. Simplify your answer as much as possible.

g(A)=pi(C/2*pi)^2 come up with this. would i input the Area forumla once i isolated r, into the Circumference formula

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Precalculus Homework

09/20/15

Define a function f that determines the radius of the circle in terms of the circumference of the circle.

Recall that the area of a circle, A, (in square inches) is determined by the formula A=πr2 where r is the radius of the circle (in inches). The circumference of a circle, C, is determined by the... more

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Precalculus Homework

09/20/15

Define a function k that determines the length of the fence in feet in terms of the fence's width in feet, w , given the total amount of fence is 1000 feet.

k(w)=500-L came up with this i know that 1000=2l+2w keeps saying its wrong

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Precalculus Homework

09/16/15

You have just built a new home and plan on building an enclosed rectangular space on the back of the house using 52 sections of fence you have purchased.

You have just built a new home and plan on building an enclosed rectangular space on the back of the house using 52 sections of fence you have purchased. Each section of fence is one foot in... more

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Precalculus Homework

08/24/15

Suppose f(x)=16-x^2. Compute the expression f(4)-f(2)/4-2 and explain what the results tell us about f(x).

We're learning about functions in class and I really have no idea what this question is even asking. Pleaseeeee help

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Precalculus Homework Precalculus Algerbra

08/24/15

Pre-Cal/Algerbra Homework Question

A rectangle is 3 inches longer than it is wide. 2 inch squares are cut out from each corner of the rectangle, and then the edges are raised to form a box. the volume of the box is 480. Find the... more

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Precalculus Homework Word Problem Help

08/23/15

How many consecutive hits must Tai get to increase his batting average to 0.600? (Description has beginning of question)

Tai has been officially at bat 128 times and has hit 32 times. His batting average is 32/128 = 0.250. How many consecutive hits must he get to increase his batting average to 0.600? I'm just... more

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Precalculus Homework Word Problem Help

08/23/15

The sum of the reciprocal of a number and the reciprocal of 5 less than the number is 7 times the reciprocal of the original number. Find the original number.

This is a math problem that has been giving me trouble for over 30 minutes now. I'm not quite sure how to tackle it.

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Precalculus Homework Precalculus Precalc Precalculus Honors

06/03/15

As a ship sails into the harbor, the navigator sights a buoy at an angle of 20 degrees to the path of the ship.

This ship sails 200 meters farther and finds that the buoy now makes an angle to 38 degrees. 1) How far is the ship from the buoy at the second sighting? 2) What is the closest the ship will ever... more

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Precalculus Homework Precalculus Trigonometry Rotations

05/19/15

Please help with coordinate axes rotation!

The exact question was: "Rotate the coordinate axes to eliminate the xy term. 2x2 + 2(sqrt3)xy + 4y2 - 8 = 0" (sqrt= square root)

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Precalculus Homework Precalculus Trigonometry Math Help

03/29/15

Simplifying Trig Expression

Simplify csc^2x-1/cot^2x

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Precalculus Homework Precalculus Honors

03/25/15

If (x - a)(x - 1) + 1 = (x + b)(x + c) is true for all x and if a, b, and c are integers, find the sum of all possible values of a.

very hard problem you are god if you can solve this

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Precalculus Homework

03/25/15

How long will it take for an initial investment of $7500, at a rate of 7.2% compounded continously, to triple? Round to the nearest tenth of a year

I need help on my homework. i dont know how to set up the problem

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Precalculus Homework Precalculus Trigonometry Trigonometric Identities

03/12/15

cosx/1+sinx + 1+sinx/cosx = 2sec

I'd like to know how to solve this problem We are learning trigonometric identities

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Calculus question

find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 3, and zeros 4-i and 4i

Write the equation of the quadratic function given the following

What is the optimal profit?

Difference Quotient problem with understanding completely: f(x)=1/x^2

prove the formula for the inverse of a 2x2 matrix

-1/2(x-2)^4/3=1-3^2

Word problem about driving for 55mi/h to anther city, staying for 25hrs, and driving 45mi/h back. She is back 49 hours after leaving.

Factor: x^3-7x-6= 0

Write the function as a composite of two functions f and g. (More than one answer is correct)

Show that f(g(x))= x and g(f(x)) =x

Define a function g that gives the area of a circle, A , in terms of the circumference of the circle. Simplify your answer as much as possible.

Define a function f that determines the radius of the circle in terms of the circumference of the circle.

Define a function k that determines the length of the fence in feet in terms of the fence's width in feet, w , given the total amount of fence is 1000 feet.

You have just built a new home and plan on building an enclosed rectangular space on the back of the house using 52 sections of fence you have purchased.

Suppose f(x)=16-x^2. Compute the expression f(4)-f(2)/4-2 and explain what the results tell us about f(x).

Pre-Cal/Algerbra Homework Question

How many consecutive hits must Tai get to increase his batting average to 0.600? (Description has beginning of question)

The sum of the reciprocal of a number and the reciprocal of 5 less than the number is 7 times the reciprocal of the original number. Find the original number.

As a ship sails into the harbor, the navigator sights a buoy at an angle of 20 degrees to the path of the ship.

Please help with coordinate axes rotation!

Simplifying Trig Expression

If (x - a)(x - 1) + 1 = (x + b)(x + c) is true for all x and if a, b, and c are integers, find the sum of all possible values of a.

How long will it take for an initial investment of $7500, at a rate of 7.2% compounded continously, to triple? Round to the nearest tenth of a year

cosx/1+sinx + 1+sinx/cosx = 2sec

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