Find the exact value of log base pi (pi^3 cos(pi)) I first canceled out log base pi and pi and was left with 3 cos (pi). Then I looked at the unit circle and looked at pi and cos is -1. So then I multiplied 3(-1)=-3 and my answer was wrong. Can someone explain what I am doing wrong please?

Question

Find the exact value of log base pi (pi^3 cos(pi))  I first canceled out log base pi and pi and was left with 3 cos (pi). Then I looked at the unit circle and looked at pi and cos is -1. So then I multiplied 3(-1)=-3 and my answer was wrong. Can someone explain what I am doing wrong please?

anonymous · Answer

Seems right to me...

anonymous · Answer

Dunno. What is the answer?

anonymous · Answer

Well it is multiple choice and it has value =3 value is not defined, value=pi, value=-3pi, value=3pi,value=-3,value=-pi.   I chose 3 and -3 and got them both wrong lol. =/

anonymous · Answer

I can't see where a pi would come from.

anonymous · Answer

me either. Maybe the value is not defined?

anonymous · Answer

-3 http://www.wolframalpha.com/input/?i=log+base+pi+pi%5E%283cos%28pi%29%29

anonymous · Answer

I put -3 and got it wrong.

anonymous · Answer

It's messed