Posted by K on Monday, November 29, 2010 at 2:44am.
Thank you for reposting.
I must have misinterpreted the question, but a sketch of the curves made it crystal clear:
We have two distinct areas enclosed by:
1. cos(x), cos(x-c),and x=0
2. cos(x-c), cos(x) and x=π
The y=0 in the second area is extraneous and misleading for someone (like me) who hasn't taken the time to make a proper sketch.
Now for the limits for each of the areas,
1. from -π+c/2 to x=0
2. from c/2 to π
We are able to find the limits because of the symmetry of the curves cos(x) and cos(x-c).
Finally, the integrals:
Hope this will get you along the way.
Hint: integrate and find each of the areas, equate the two areas and solve for c [if necessary].
Thank You. I think i got the idea. i will try to solve it.
I got two areas but i cant solve it for c because they cancel each others out!!!
the integral for the first one i got is [sin(c)cos(x)-cos(c)sin(x)+sin(x)+c]
the integral for the 2nd one i got is [-sin(c)cos(x)+cos(c)sin(x)-sin(x)+c]
I dont know what to do from here. can u pleses help???
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