Q50Multiple choice
x dx is equal to
- (A)(x + 1) tan –1 x – x + C
- (B)x tan –1 x – x + C
- (C)x – x tan –1 x + C
- (D)x – ( x + 1) tan –1 x + C 1– x ∫ e 1 + x 2 dx is equal to 51. ex –ex (A) +C (B) +C 1 + x2 1 + x2 ex –ex (C) +C (D) +C (1 + x 2 ) 2 (1 + x 2 )2 x9