25) Use Dr. Dai's Differential Table to find [tan - 1(x) ]' =, 25) A) 1/ (1+ x2) B) – tan-2(x) sec2x C) 1/\1-x2 D) - cot2 x csc x 26) Use Product Rule to find [(x²) tan - 1(x)]'=. A) – 2x tan-2(x) sec2x C) (x2) tan - 1(x)+ x3/ (1 + x2) 26) B) (2x) tan - 1(x)+ x2/ (1 + x2) D) 2x/ (1 + x2)

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