f(x)= xn sinx cosx
n! sin((npi)/2) cos((npi)/2)
a a2 a3
show that dn/dxn[f(x)] at x=0 is 0....
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1 Answers
Lokesh Verma
·2011-06-08 10:00:06
When we have a determinant with one single variable row, then we can differentiate the row alone...
the nth derivative will be n! , nth derivative of sin x and nth derivative of cos x
Now can u give it a shot taking n as 4k or 4k+1 or 4k+2 or 4k+3