Answer:
Let
y = (sin x ? cos x)sinx ? cos x
Log
y = (sin x ? cos x) log (sin x ? cos x)
Diff.
w.r.t.x.
+
log (sin x ? cos x) × (cos x + sin x)
×
(cos x + sin x) [1 + log (sin x ? cos x)]
(Provided
sin x > cos x)
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