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syms n x
disp('=====this is the result after integration=====')
eq1=int((sin(x)^n),x,0,pi/2)
disp('=====this is the result after limitation======')
answer=limit(eq1,n,inf)
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eq1 =
1/2*pi^(1/2)*gamma(1/2+1/2*n)/gamma(1+1/2*n)
  =====this is the result after limitation======
answer =
0
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