Question

Differentiate

A) y = -Cos2x

B) y = Sin2tetta - 2Cos2tetta

C) f(tetta) = negative pie*Sin(2tetta - pie)

Tetta means that zero with a line going horizontally across mid zero. Like In trigonometric identities you have ___ tetta....

Answer 1

Go on: wolframalpha dot com

When page be open in rectangle type:

derivative cos(2x)

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After few seconds when you see result click option:

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Then in in rectangle type:

derivative sin(2theta)-2cos(2theta)

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C)

sin ( theta - pi ) = - sin ( theta )


sin ( 2 theta - pi ) = - sin ( 2 theta )


f(theta) = - pi * sin( 2theta - pi ) =

- pi * [ -sin ( 2 theta ) ]=

pi * sin ( 2 theta )

Answer 2

A) y'= 2sin(2x)
B) y'= 4sin(2theta) -2cos(2theta)
C) y'= 2piCos(2theta)

Answer 3

A) y'= - 2sin(2x)

B) y'= 4 sin ( 2 theta ) + 2 cos ( 2theta ) =

2 [ 2 sin (2 theta ) + cos ( theta ) ]

C) y'= 2piCos(2theta)