If `tanx=b/a`, find the value of `(acos2x+bsin2x)`.

Find the value of x when tanx=1.

Find the derivative of (x+cosx)/(tanx)

If p(x)= 2-x^(2) find the value of p(-1)?

If acos theta+bsin theta=4 and a sin theta-b cos theta=3 ,then find the value of a^(2)+b^(2)

If x=a sin theta and y=b tan theta , then find the value of (a^(2))/(x^(2))-(b^(2))/(y^(2))

If x = a and y = b is the solution of the pair of equations x-y=2" and "x+y=4 , find the values of a and b.

If 3x = cosec theta and 3/x = cot theta , find the value of 3(x^(2)- (1)/(x^(2))) .

If lim_(xto oo){(x^2+1)/(x+1)-ax-b}=2 , find the value of a and b.

If lim_(xtooo)((x^(2)+1)/(x+1)-ax-b)=oo , find the values of a and b.

If lim_(xtooo)((x^(2)+1)/(x+1)-ax-b)=0 , find the values of a and b.