help..question uploaded..AP CALCULUS QUIZ QUESTIONS both images go to the same information that is provided above 12.

Question

istim · Answer

Hey, I'm doing Calculus too. We should learn from each other.

anonymous · Answer

lol i hardly understand ap

istim · Answer

Well, with the help from each other, we can go form being mediocre to decent, and then up from there.

anonymous · Answer

right now i just want to figure this out to be honest

apoorvk · Answer

dy/dx = (1/2) ycosx

dy/y = (cosx.dx)/2

Integrate both sides. and get

lny = sinx/2 + c 

(where is c is constant of integration)

Now, since its given f(0)=2, plug in x=0 and y=2 in the solved equation above to find out what 'c' is.

so, 
ln2 = c


So, the differential equation is:


lny = sinx/2 +ln2

apoorvk · Answer

*solved differential equation.

anonymous · Answer

thats not even an answer choice

istim · Answer

Maybe...we can derive an answer from that?

anonymous · Answer

if he is doing 13 i got d.

anonymous · Answer

omg this is hard.

apoorvk · Answer

Oh sorry, the image was quite big, so I didn't read the whole question, thinking that was all, (I scrolled down later). I 'll post a solution for that, once the website restarts.

anonymous · Answer

alright thank you! :) sorry i did not know the pic was big

apoorvk · Answer

Its okay, it was my foolishness not to have scrolled down :P