int (1/(4-r^2)^0.5) dr dx, r=0 to 2sinx, x=0 to 2pi
I'm stuck at
int (arcsin(sin(x))) dx, x=0 to 2pi
Should i have done a change in variables somewhere?
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Try plotting the function, and I think you'll see what needs to be done.
For x between and , . For x between and , .
I think it's more this:
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