Evaluate the integral

femmed0ll

New member
Joined
Aug 9, 2010
Messages
14
18)
0
? (3x^2 + x + 9) dx
3

19)
2a
? x^2 dx
0

how do i solve these problems? can you have a step by step process on how to figure out the answers? thanks!
 
femmed0ll said:
18)
0
? (3x^2 + x + 9) dx
3

19)
2a
? x^2 dx
0

how do i solve these problems? can you have a step by step process on how to figure out the answers? thanks!

These are straight-forward problems. Exactly where are you stuck?

\(\displaystyle \int_3^0(3x^2+x+9)dx \ = \ \int_3^0(3x^2)dx \ + \ \int_3^0(x)dx \ + \ \int_3^0(9)dx \\)

and continue...

Please share your work with us, indicating exactly where you are stuck - so that we may know where to begin to help you
 
femmed0ll said:
how exactly would you set up the problem?

I have set-up the first problem above.

If you do not recognize that - you need face-to-face help from your class-room teacher.

Do you know - what the anti-derivative is for 3x[sup:3vxueuud]2[/sup:3vxueuud]?

\(\displaystyle \int(3x^2) dx \ = \ x^3 + C\)
 
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