Write z, and z, in polar form. Z1 = 7 + 7i, z2 = 4 21 = Z2 Find the product z122 and the quotients 21 (Express your answers in polar form.) and z2 Z122 =

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Q: anx" + + a1x + ao An 4. If f(x) = bn with an #0 and b, #0, show that lim f(x)% = ... %3D .. + b1x + ...

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Q: 2(-1)n-1_ (2n)! (n!)2. 2n n=1

A: solution:-∑n=1∞-1n-12n!n!2.2nan=-1n-12n!n!2·2nan+1=-1n2n+1!n+1!2·2n+1Applying the ratio testL=limn→∞...

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