(a) Calculate the first derivative of ff. Find the critical numbers of ff, where it is increasing and decreasing, and its local extrema. f′(x)= Critical numbers x= Union of the intervals where f(x) is increasing Union of the intervals where f(x) is decreasing Local maxima x= Local minima x=x (b) Find the following left- and right-hand limits at the vertical asymptote x=−5 limx→−5− (2x^2)/((x^2)-25) = limx→+5(2x^2)/((x^2)-25)= Find the following left- and right-hand limits at the vertical asymptote x=5x=5.
Please answer the following questions about the function
Instructions:
- If you are asked for a function, enter a function.
- If you are asked to find xx- or yy-values, enter either a number or a list of numbers separated by commas. If there are no solutions, enter None.
- If you are asked to find an interval or union of intervals, use interval notation. Enter { } if an interval is empty.
- If you are asked to find a limit, enter either a number, I for ∞∞, -I for −∞−∞, or DNE if the limit does not exist.
(a) Calculate the first derivative of ff. Find the critical numbers of ff, where it is increasing and decreasing, and its local extrema.
f′(x)=
Critical numbers x=
Union of the intervals where f(x) is increasing
Union of the intervals where f(x) is decreasing
(b) Find the following left- and right-hand limits at the vertical asymptote x=−5
Find the following limits at infinity to determine any horizontal asymptotes.
(c) Calculate the second derivative of ff. Find where ff is concave up, concave down, and has inflection points.
f′′(x)=
Union of the intervals where f(x) is concave up
Union of the intervals where f(x) is concave down
Inflection points x=
(d) The function f is ______ because ______for all xx in the domain of ff, and therefore its graph is symmetric about the
(e) Answer the following questions about the function f and its graph.
The domain of ff is the set (in interval notation)
The range of ff is the set (in interval notation)
y-intercept
x-intercepts
(f) Sketch a graph of the function ff without having a graphing calculator do it for you. Plot the yy-intercept and the xx-intercepts, if they are known. Draw dashed lines for horizontal and vertical asymptotes. Plot the points where ff has local maxima, local minima, and inflection points. Use what you know from parts (a) - (c) to sketch the remaining parts of the graph of ff. Use any symmetry from part (d) to your advantage. Sketching graphs is an important skill that takes practice, and you may be asked to do it on quizzes or exams.
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