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Varsity KA Admission Model Test 9
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Question 1 of 100
General Science
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If then, y = ln ( 1+x 1−x ) − 2tan−1 x dy dx =?
A
1 1−x2
B
2x2 1−x4
C
4x4 1−x
D
4x2 1−x4 y = ln (1 + x) − ln (1 − x) − 2tan−1 x; dy dx = 1 1+x + 1 1−x − 2 1+x2 = 4x2 1−x4
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