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Mathematics
Mathematics
Problem
Find
d
d
x
[
sin
x
cos
x
]
\dfrac{d}{dx}[\sin x\cos x]
d
x
d
[
sin
x
cos
x
]
. a)
2
sin
x
cos
x
2\sin x\cos x
2
sin
x
cos
x
b)
cos
2
x
+
sin
2
x
\cos^{2}x+\sin^{2}x
cos
2
x
+
sin
2
x
c)
cos
2
x
−
sin
2
x
\cos^{2}x-\sin^{2}x
cos
2
x
−
sin
2
x
d)
−
cos
2
x
+
sin
2
x
-\cos^{2}x+\sin^{2}x
−
cos
2
x
+
sin
2
x
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