calculus help?

Question

1).Calculate ∫ x^3 dx.

A.x^2+C

B.3x^2+C

C.x^4+C

D.x^4
--------- + C
4


2).Calculate ∫ x ⅔ dx.

A. 2
-------- + C
3x⅔

B.3
------ + C
2x⅔

C.3x 5/3
----------- +C
5

D.5x 5/3
----------- + C
3


3).Calculate ∫ dx/x^2

A. 1
----- +C
x

B.-1
-------- +C
x

C.1
-------- +C
3x^3

D.-1
---------- +C
3x^3


4).Find the area bounded by the curve y = x 1/2 + 2,the x-axis,and the lines x=1 and x=4.

A.7 1/2
B.10 2/3
C.16
D.28 1/2


5).A body is moving along a straight line with a velocity which varies according to the equation v=9 t^2+2t, where v is in feet per second and t is in seconds. Find the expression for the distance as a function of time.

A.3t^3+t^2+C
B.3t^3+2t^2+C
C.18t+C
D.20t+C

Answer 1

hey,it's quite easy.
use the formula integral(x^n)=n(x^(n-1)).
if u work out the answers wud be.
1.D
2.C
3.B
4.hey ,wat is it?is it x^1/2or x/2????
5.A
bye...

Answer 2

1)D --> ( x^4 ) / 4
2)C --> (3 / 5) * x^( 5 / 3 )
3)D --> -1 / ( 3 * x^3 )
4)??????????
5)A --> 3 * t^3 + t^2 + C

Answer 3

Hey, that's five questions :)

Answer 4

1B
2A
3B
4A
5A