Q6- find an equation of the tangent line to the given curve at the specified point.

y=x²1/x²+x+ 1,(1, 0)

y=

Q7- (a) The curvey= 1/(1 +x²) is called awitch of Maria Agnesi. Find an equation of the tangent line to this curve at the point(1,1/2)

Q8- Iff(x) =x²/(4+x), findf''(4).

f''(4) =

Q9- Suppose thatf(5) =1,f'(5) =9,g(5) =6, andg'(5) =3. Find the following values.

(a)(fg)'(5)

(b)(f/g)'(5)

(c)(g/f)'(5)