(5) Consider the following table of values for differentiable functions f and g. xf(x) f'(x)| g(x) | g(x) 1 2 3 0.9 1 -8 7.1 2/3 2 e -8 -3 -7 3 3 2 1.2 1 -1 T +e For each function given by y below, use the table and derivative rules to compute the desired derivative. dy at x = 3. dx (a) If y(x) = f(x) + g(x) – 5, find (b) If y(x) = f(x)g(x), find the slope of the line tangent to the graph of y at x = 2. (c) If y(x) = (f (x))/(g(x)), find the instantaneous rate of change of y when x = T. (d) If y(x) = (g(x))², do you think is increasing, decreasing or neither at x = e? Explain your answer.

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I need help answering all parts of question #5. Please make sure to really explain and show steps so I understand how to do it. 

(5) Consider the following table of values for differentiable functions f and
g.
x f(x) f'(x) g(x) g(x)
1
2
0.9
1
2
-8
7.1
2/3
2
e
-8
-3
-7
3
3
1.2
1
-1
TT +e
For each function given by y below, use the table and derivative rules to compute the desired
derivative.
(a) If y(x) = f(x)+ g(x) – 5, find
dy
at x = 3.
dx
(b) If y(x) = f(x)g(x), find the slope of the line tangent to the graph of y at x = 2.
(c) If y(x) = (f (x))/(g(x)), find the instantaneous rate of change of y when x = T.
(d) If y(x) = (g(x))², do you think y is increasing, decreasing or neither at x = e? Explain
your answer.
Transcribed Image Text:(5) Consider the following table of values for differentiable functions f and g. x f(x) f'(x) g(x) g(x) 1 2 0.9 1 2 -8 7.1 2/3 2 e -8 -3 -7 3 3 1.2 1 -1 TT +e For each function given by y below, use the table and derivative rules to compute the desired derivative. (a) If y(x) = f(x)+ g(x) – 5, find dy at x = 3. dx (b) If y(x) = f(x)g(x), find the slope of the line tangent to the graph of y at x = 2. (c) If y(x) = (f (x))/(g(x)), find the instantaneous rate of change of y when x = T. (d) If y(x) = (g(x))², do you think y is increasing, decreasing or neither at x = e? Explain your answer.
Expert Solution
Step 1

(5)(a)If y(x)=f(x)+g(x), find dydx at x=3y(x)=f(x)+g(x)=dydx=f'(x)+g'(x)   [By sum rule of derivatives]=dydxx=3=f'(x)+g'(x)x=3=dydxx=3=f'(3)+g'(3)dydxx=3=2+π  [using table]b)y=f(x).g(x)slope to y(x) at x=2 is givenby dydx at x=2y=f(x).g(x)dydx=f(x).g'(x)+f'(x).g(x)   [Product rule]dydxx=2=f(2).g'(2)+f'(2).g(2)=-8*23+7.1*23=-163+14.23=-1.83dydxx=2=-0.6so, slope of tangent to y at x=2=-0.6

 

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