Select the third function, y = 2 cos(x),

and set the interval to [−4.01, 4.01].

(a) With 10 rectangles using left endpoints, how many rectangles are contributing negative area values to the estimated net area?

How many are positive?

(b) What is the error when using midpoints with 10 subintervals? (Do not round your answer.)

What is the ratio of the left-endpoint approximation error to the midpoint error? (Round your answer to two decimal places.)

(c) Of the available choices, how many subintervals are required to give a midpoint approximation accurate to 2 decimal places?

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

the answer is c.

step-by-step explanation:

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your answer is b.

x = 33.9

y = 65.6

step-by-step explanation: