InterviewSolution
Saved Bookmarks
| 1. |
Evaluate `intsec^(2)x"cosec"^(2)xdx`.A. `tanx-cotx+C`B. `tanx+cotx+C`C. `-tanx+cotx+C`D. none of these |
|
Answer» Correct Answer - A `I=intsec^(2)x(1+cot^(2))dx=intsec^(2)xdx+intsec^(2)xcot^(2)xdx`. `=tanx+int(1)/(cos^(2)x)*(cos^(2)x)/(sin^(2)x)dx=tanx+int"cosec"^(2)xdx` `=tanx-cotx+C`. |
|