Soru
Consider the function y=g(x)=-x^2+5x+2 (a) Use the limit definition to compute a formula for y=g'(x) y= (b) Determine the slope of the tangent line to y=g(x) at the value x=2 slope= (c) Compute g(2) g(2)= (d) The equation for the tangent line to y=g(x) at the point (2,g(2)) written in point-slope form, is y-square =square (x-square ) Fill in the blanks with the appropriate numbers.
Çözüm
4.5
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Fadime
Kıdemli · 9 yıl öğretmeni
Uzman doğrulaması
Cevap
(a) To compute the derivative of the function
using the limit definition, we need to find the limit of the difference quotient as the change in
approaches 0.The difference quotient is given by:
Substituting the function
into the difference quotient, we get:
Taking the limit as
approaches 0, we get:
Therefore, the formula for the derivative
is:
(b) To determine the slope of the tangent line to
at the value
, we need to evaluate the derivative
at
.Substituting
into the derivative formula, we get:
Therefore, the slope of the tangent line to
at the value
is 1.(c) To compute
, we need to substitute
into the original function
.Substituting
, we get:
Therefore,
.(d) The equation for the tangent line to
at the point
written in point-slope form is:
Substituting the values of
and
, we get:
Therefore, the equation for the tangent line to
at the point
written in point-slope form is: