Sunday

January 25, 2015

January 25, 2015

Posted by **Anonymous** on Saturday, February 28, 2009 at 4:25pm.

Find the areas enclosed by the x-axis and these curves and straight lines

a) y= (1/8)x^3 + 2x, x=2, x=4

for this I got 132 sq units, but the book says 19.5

b) y=6-(1/(sqrt x)), x=16, x=25

for this I got 53 sq units and in the book it says 52

c) y= (3x-4)^2, x=1, x=3

for this I got 13 sq units but the book says its 14 sq units

Thanks in advance!

- basic Integration -
**drwls**, Saturday, February 28, 2009 at 5:59pma) The integral of the function from 2 to 4 is the difference in values of

x^4/32 + x^2 at the two points. That would be 8 + 16 - 0.5 - 4 = 19.5

b) The indefinite integral is

6x - 2 x^1/2

The difference in that function at the two limits is

150 - 10 - 96 + 8 = 52

I suggest you check your math again, or the way you are doing the integration.

**Answer this Question**

**Related Questions**

overview of teaching techniques - how should students be grouped to best ...

Science - Hi, I have two questions about biology I need help with. 1) Some ...

English - 1. When is the due date of the report? It is on May 1st. 2. When is ...

need guidance on an algebra problem - 20 x+3(y-1)=11 2(x-y)+8y = 28 multiply ...

AP World Civilizations - I have to take cornell notes on each chapter of my book...

Religions of the World - For my final project I have to conduct an interview ...

Is their a history tutor on Board right now? - I really need help with my ...

Foods - I think I have mostly all the answers to my questions though I don't ...

Government - A police officer has arresteda suspect and produced evidence of ...

Chemistry lab - I have spent the last 6 hours trying to figure this out and ...