# Definite intergral double check

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• May 8th 2010, 06:13 AM
Daniiel
Definite intergral double check
http://img85.imageshack.us/img85/6329/15683553.jpg
i end up getting
[2/5log(9) . 1/2log(7)] - [2/5log(4) - 1/2log(5)]

= 0.156
Is that right? wolfram says its right, but it seems like a weird answers for an assignment question
• May 8th 2010, 06:50 AM
Sudharaka
Quote:

Originally Posted by Daniiel
http://img85.imageshack.us/img85/6329/15683553.jpg
i end up getting
[2/5log(9) . 1/2log(7)] - [2/5log(4) - 1/2log(5)]

= 0.156
Is that right? wolfram says its right, but it seems like a weird answers for an assignment question

Dear Daniiel,

Yes your answer is correct.
• May 8th 2010, 07:14 AM
TKHunny
Quote:

Originally Posted by Daniiel
= 0.156
Is that right? wolfram says its right, but it seems like a weird answers for an assignment question

Not a real good consideration. Work so that your writings can be understood and check with confidence. Would you feel better about this answer...

$
\frac{1}{10}\cdot \ln\left(\left(\frac{3}{2}\right)^{8}\cdot\left(\f rac{5}{7}\right)^{5}\right)
$