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# 1)Find an equation of the line tangent to the graph of y= 1-2x-7x^2 at the point (1,-8) 2) if f(x) = 7x^2 -10x-20 , find f'(a) 3) the limit lim(h

1)Find an equation of the line tangent to the graph of y= 1-2x-7x^2 at the point (1,-8)

2) if f(x) = 7x^2 -10x-20 , find f'(a)

3) the limit lim(h goes to 0 ) = ((sqrt(9+h)-3))/h , represents the derivative of some function f(x) at some number a , find f , a

4)the limit lim(h goes to 0 )=(6+h)^3-216/h , represents the derivative of some function f(x) at some number a , find F and a

1)Find an equation of the line tangent to the graph of y= 1-2x-7x^2 at the point (1,-8)
2) if , find f'(a)
Solution:
Differentiating with respect to x we get, Substituting variable x with a we get,...

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