Doug C.

Calculus 2

11/14/15

Evaluate the following indefinite integral

Evaluate the following indefinite integral: ∫(3x-2)/((x-1)(x2+1)) dx

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Calculus 2

11/14/15

Evaluate the following indefinite integral

Evaluate the following indefinite integral: ∫1/(x2-3x-10) dx

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Algebra

11/13/15

the denominato exceeds the numerator by 7 If 3 is added to the numerator and 1 is subtracted from the denominator theis equal to 4/5. find the original fraction

i need to no this answer quickly!

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Answers •3

Math Calculus Precalculus

11/11/15

Evalulate Basic Problems

My professor said for this problem to use inverse trig functions, half angle, and double angle identities. Evaluate: tan(2sin-1(4/5)) Please list the answer step by step and next to... more

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Calculus

11/11/15

Estimate the area under the graph

Suppose you estimate the area under the graph of f(x)=1x from x=11 to x=111 by adding the areas of rectangles as follows: partition the interval into 50 equal subintervals and use the left endpoint... more

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Calculus

11/10/15

Estimate the area under the graph

Suppose you estimate the area under the graph of f(x)=x3 from x=3 to x=23 by adding the areas of rectangles as follows: partition the interval into 20 equal subintervals and use the right endpoint... more

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Ratios

11/10/15

a:b as c:a. If a = 1, what is b?

I realllllllly neeeeeeeeeeeeeeeed help with this equation. It's extremely important.

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Math Calculus Precalculus

11/10/15

Solve each equation for all values of x in the real number system.

Solve each equation for all values of x in the real number system. If an exact solution does not exist, round your answers to the nearest hundredth. 1. sin2x=sinx 2.... more

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Math Calculus Precalculus

11/09/15

Through what angle does the observer see the pole?

One end of a 9.3 foot pole is 13.6 feet from an observer's eyes, and the other end is 17.4 feet from the observer's eyes. Through what angle does the observer see the pole?

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Other

11/08/15

Simple algebra word problem

Kady drove through the city for an hour. She drove for 2 hours on the highway, where her speed was 10 miles per hour faster than in the city. If she covered a total distance of 146 miles, what was... more

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Word Problem

11/07/15

the sum of two numbers is 18. if twice the smallest number is 6 more than the larger, find the two numbers.

the equation should be in the system of linear equations.

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Answers •3

Algebra

11/07/15

Help with functions

I'm doing a problem with functions and it's asking me to find f(a+7) and simplify. The original problem is f(x)=x+5/(x-8)^2...I plugged in f(a+7) and came up with this f(a+7)=(a+7)+5/((a+7)-8)^2.... more

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Calculus

11/05/15

function help

Find the derivative of the function below. f(x)=x^2 (x+4)−2x/(x^2+1)

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Math Math Help Advanced Functions

11/05/15

prove that 1-sinx/secx=cos3x/1+sinx

I need the answer asap

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Answers •1

Calculus

11/05/15

optimization problem help!

A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $5 per square foot and the metal for the sides costs $4 per square foot.... more

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Answers •2

Calculus

11/05/15

optimization problem help!

An open box is to be made out of a 8-inch by 14-inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. Find the dimensions of the resulting box... more

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Answers •1

Calculus Trigonometry

11/04/15

Please help with trig calculus!!

F(x)= -4cos(x)-3 crosses the y axis at P and the positive side of the x axis for the FIRST time at Q. 1.Find the coordinates of P and Q 2. Find the STANDARD form equation of the tangent to... more

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Calculus

11/04/15

Please help me with this calc problem!

Chord AB joins A(-4,0) and B(0,2) on the graph of y^2=4+x 1.At what point(s) is the tangent to the curve parallel to AB? 2.At what point(s) does the perpendicular bisector of AB intersect the... more

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Linear Algebra

11/01/15

For any a, x, y...

For any a, x, y ∈ R define x⊕y = (x3+y3)1/3 and a⊗x = ³√ax. Show that a⊗(x⊕y) = (a⊗x)⊕(a⊗y).

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Geometry Triangles

10/30/15

Let D,E,F be the feet of the altitude from A,B,C in a triangle ABC.Prove that the perpendicular bisector of EF also bisect BC

good geometry

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Math Calculus Hyperbolic Functions

10/28/15

Show that any function of the form : y = A sinh mx + B cosh mx satisfies the differential equation y^n = ym^2.

(a) Show that any function of the form : y = A sinh mx + B cosh mx satisfies the differential equation yn = m2y.(b) Find y = y(x) such that yn = 9y, y(0) = -4, and y'(0) = 6. I don't even know... more

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Math Calculus Hyperbolic Functions

10/28/15

A telephone line hangs between two poles 14 m apart....

A telephone line hangs between two poles 14 m apart in the shape of the catenary y = 20cosh(x/20) - 15, where x and y are measured in meters. (a) Find the slope of this curve where it meets the... more

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Math Calculus Hyperbolic Functions

10/27/15

Find the derivative of cosh^-1 * x^1/2. Simplify if possible

Find the derivative of xsinh-1 (x/3) - (9 + x2)1/2. Simplify if possible. I know I need to apply the Product, Chain and Power Rules: y'(x) sinh-1 (x/3) + y'(sinh-1(x/3) * y'(x/3))x -... more

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Calculus 2

09/15/15

Shell Method

Use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region about the x-axis. y=square root(x+12) y=x y=0

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Calculus 2

09/15/15

Disk Method

Use the disk method or the shell method to find the volume of the solid generated by revolving the region bounded by the graphs of the equations about each given line. y=x^2, y=0, x=3

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Answers •1

Evaluate the following indefinite integral

Evaluate the following indefinite integral

the denominato exceeds the numerator by 7 If 3 is added to the numerator and 1 is subtracted from the denominator theis equal to 4/5. find the original fraction

Evalulate Basic Problems

Estimate the area under the graph

Estimate the area under the graph

a:b as c:a. If a = 1, what is b?

Solve each equation for all values of x in the real number system.

Through what angle does the observer see the pole?

Simple algebra word problem

the sum of two numbers is 18. if twice the smallest number is 6 more than the larger, find the two numbers.

Help with functions

function help

prove that 1-sinx/secx=cos3x/1+sinx

optimization problem help!

optimization problem help!

Please help with trig calculus!!

Please help me with this calc problem!

For any a, x, y...

Let D,E,F be the feet of the altitude from A,B,C in a triangle ABC.Prove that the perpendicular bisector of EF also bisect BC

Show that any function of the form : y = A sinh mx + B cosh mx satisfies the differential equation y^n = ym^2.

A telephone line hangs between two poles 14 m apart....

Find the derivative of cosh^-1 * x^1/2. Simplify if possible

Shell Method

Disk Method

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