Question

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Answer 1

Answer:

option 3 hai

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Answer 2

AnsWer :

0.

Solution :

We have,

$\tt \dagger \: \: \: \: \: y = {sin}^{2} x + {cos}^{2} x$

Let differentiate w.r.t.x

$\tt \longmapsto {(sin \: x) }^{2} + {(cos \: x)}^{2}$

$\tt \longmapsto (2sin \: x \: cos \: x )+ (2 - sin \: x \: cos \: x.)$

$\tt \longmapsto 2sin \: x \: cos \: x - 2sin \: x \: cos \: x$

$\tt \longmapsto 0.$

$\rule{120}1$

Some information :

When, y = Cos x.

• dy/dx = -sin x.

When, y = Sin x.

• dy/dx = cos x.

When, y = sec x.

• dy/dx = sec x . tan x.

When, y = cot x.

• dy/dx = -cosec²x.

When, y = a^x.

• dy/dx = a^x log ^a