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OpenStudy (anonymous):
if y = arccot(tanx) find y’ (π/2) a. 0 b. ½ c. 1 d. -1
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OpenStudy (anonymous):
\[y' \]
OpenStudy (shubhamsrg):
either you can directly differentiate both sides, or just to be on the clever side, make use of this : tanx = cot(pi/2 -x)
OpenStudy (anonymous):
so the answer is 100% = 1?
OpenStudy (shubhamsrg):
what makes you say so ?
OpenStudy (anonymous):
tanx = cot(pi/2 - x) are the same value
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OpenStudy (shubhamsrg):
hmmm ??
OpenStudy (shubhamsrg):
i mean, then ?
OpenStudy (anonymous):
y i getting -1 harr
OpenStudy (shubhamsrg):
because it is -1 .. :D
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