61. y = tan (πx2)的微分
(A)2π sec2x
(B)2π sec (πx2)
(C)2πx sec (πx2)
(D)2π tan2(πx2)
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統計: A(12), B(8), C(28), D(2), E(0) #3154392
統計: A(12), B(8), C(28), D(2), E(0) #3154392