Math 12 Chapter 2
Differentiation
Test - 9


Math Class 12
1. The fourth derivative of cos x is sin x.


2. d/dx [logax] = lna/x


3. The derivative of ln sin x w.r.t. x is tan x.


4. The tenth derivative of eq w.r.t.q is eq.


5. If x = sin t/2 , y = cos t/2 then dy/dx = tan t/2.


6. If x = 2at and y = at2 then dy/dx = x/2a.


7. If xy = 3 then dy/dx = x/y.


8. The derivative of tan x2 is sec2x.


9. d/dq (cos-1 2q) = 1/Ö1-4q2


10. For finding the derivatives of trigonometric functions f(x), x must be in degrees.


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