Question: ( 4 ) a ) 7 p t s Show that d d x ( s i n 2 x 1 + c o t

(4) a)7pts Show that
ddx(sin2x1+cotx+cos2x1+tanx)=-cos2x
b)[8 pts] Let f(x)=x2e5x. Use mathematical induction to prove the formula f(n)(x)=e5x5n-2(52x2+10nx+n(n-1)), for all n2.
( 4 ) a ) 7 p t s Show that d d x ( s i n 2 x 1 +

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