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GST-A_20-21
HSC - উচ্চতর গণিত ১ম পত্র
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অধ্যায়-০৯ঃ অন্তরীকরণ
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d
d
(
cos
x
)
(
sin
x
)
=
?
\frac{d}{d(\cos x)}(\sin x)=?
d
(
c
o
s
x
)
d
(
sin
x
)
=
?
A.
cot
x
\cot x
cot
x
B.
−
cot
x
-\cot x
−
cot
x
C.
sec
2
x
\sec ^{2} x
sec
2
x
D.
cosec
2
x
\operatorname{cosec}^{2} x
cosec
2
x
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\frac{d}{d(\cos x)}(\sin x)=?