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What is `int e^(e^(x)) e^(x) dx` equal to ?A. `e^(e^(x)) + c`B. `2e^(e^(x)) + c`C. `e^(e^(x)) e^(x) + c`D. `2e^(e^(x)) e^(x) + c` |
Answer» Correct Answer - A `I = int e^(x) e^(x) dx` Let `e^(x) = y rArr e^(x) dx = dy` `dx = (dy)/(e^(x))` `I = int e^(y) e^(x) (dy)/(e^(x)) = int e^(y) dy = e^(y) + c` `I = int e^(y) e^(x) (dy)/(e^(x)) = int e^(y) dy = e^(y) + c` `I = e^(e^(x)) + c` |
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