Asked by Moon

If ฦ’(๐‘ฅ)=๐‘ฅ2+1,๐‘กโ„Ž๐‘’๐‘›(ฦ’โˆ˜ฦ’)(๐‘ฅ)=
(A) 2๐‘ฅ2+1
(B) 2๐‘ฅ2+2
(C) ๐‘ฅ4+1
(D) ๐‘ฅ4+2๐‘ฅ2+1
(E) ๐‘ฅ4+2๐‘ฅ2+2
Answered by oobleck
(fโ—ฆf)(x) = f(f) = f^2+1 = (x^2+1)^2 + 1
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