Unit 5A Flashcards

1
Q

What is the equations for a volume of a cylinder and when do you use it?

A

v=pir^2h
when your rotating around something

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2
Q

The area of the region between the graph y = 4x^3 + 2 and the x axis rom x=1 to x=2 is…

A

int from 1-2(4x^3+2)dx
it gives you 17

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3
Q

What is the equation for the shaded area between f(x) (on top) and g(x) (on bottom) from a-c

A

int from a-c(f(x) - g(x)) dx

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4
Q

A region in quad 1 is bound by y = 4-x^2 set up equation for volume and do not solve for:
a. rotate around y axis
b. rotate around x = -3
c. rotate around x = 3
d. rotate around x axis
e. rotate around y = -5
f. rotate around y=5

A

a. int0-4 pi(sqr4-y)^2dy
b. int0-4 pi((sq4-y)^2 + 3^2) dy - int0-4 pi 3^2 dy
c. int0-4 pi 3^2 dy - int0-4 pi(3^2 - (sq4-y)^2) dy
d. int 0-2 pi(4-x^2)^2 dx
e. int0-2 pi (4-x^2)^2 + 5^2 dx - int0-2 5^2 dx
f. int0-2 pi5^2dx - int0-2(5^2-(4-x^2)^2)dx

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5
Q

Let r be the region bounded by the graph of y1 = 6e^-0.2x and y2=sqx and by the vert lines x = 1 and x=4 find the volume when x is rotated around the x axis,

A

int1-4 pi y1^2dx - int1-4 pi y2^2 dx

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6
Q

a. The shaded region r is bound by y=x^2 and y = 4 find the area
b. revolve around the x axis

A

a. int-2-2( 4-x^2) dx = 10.66
b. int-2-2 pi(4^2) dx - int-2-2 pi (x^2)^2 dx = 160.849

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7
Q

When do you use volume of rectangular prism and whats the equation

A

lwh and when your finding the area (NOT ROTATING)

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8
Q

a. What is the equation for Simpsons rule
b. what is the order of numbers timed by
c. and what do you multiply those numbers by

A

a. 1/3h(all the other stuff)
b. (1 then 2 then 2 then 4 then 2 … till the last one that is timed by 1) -that is all the other stuff
c. the y values

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9
Q

a. sin pi/2
b. sin 0
c. cos 0
d. tan 0

A

a. 1
b. 0
c. 1
d. 0

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10
Q

Given inta-b f(x) dx = 12 and int b-c f(x) dx=8 then what does int c-b f(x) =? and intc-a f(x) = ?

A

-8
20

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11
Q

Look at review redo those problems

A

DO IT

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