emmacox069
15.07.2019 •
Mathematics
Extra points / wrong answers will be reported question 1 (multiple choice worth 7 points) use the given graph to determine the limit, if it exists. a coordinate graph is shown with a downward sloped line crossing the y axis at the origin that ends at the open point 3, negative 1, a closed point at 3, 7, and a horizontal line starting at the open point 3, negative 4. find limit as x approaches three from the right of f of x.. -1 7 -4 does not exist question 2(multiple choice worth 6 points) find the derivative of f(x) = 4 divided by x at x = 2. -4 -1 1 4 question 3(multiple choice worth 7 points) use graphs and tables to find the limit and identify any vertical asymptotes of limit of 1 divided by the quantity x minus 7 as x approaches 7 from the left. -∞ ; x = 7 ∞ ; x = -7 -∞ ; x = -7 1 ; no vertical asymptotes q
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Ответ:
Q1. The limit from the right is -4. (The limit from the left, and the value of f(3) are different, but that doesn't matter for the question asked. Taken together, they mean that the limit as x approaches 3 does not exist. But that is not the question asked.)
Q2. f(x) = 4/x.
f'(x) = -4/x^2, so f'(2) = -4/2^2 = -1.
Q3. Since the denominator is zero at x=7, the only answer choice that makes any sense is the first one:
-∞; x = 7
It also happens to be the right one.
Ответ:
9+9+3+3=24
Step-by-step explanation: