I get C for this one...I multiplied each of the numbers in the first by all in the second then combined like terms....hope this helps
I'm guessing the purpose of this exercise is to find the average value of
over the region
,
![D=\left\{(x,y)\mid (x,y)\in[-\pi,\pi]^2\right\}](https://tex.z-dn.net/?f=D%3D%5Cleft%5C%7B%28x%2Cy%29%5Cmid%20%28x%2Cy%29%5Cin%5B-%5Cpi%2C%5Cpi%5D%5E2%5Cright%5C%7D)
which is

The denominator is the measure (area) of
, which is easy to compute:

Not to be confused with the integral in the numerator:

but this integral is difficult to compute, hence the inequalities. We have




The slope is 1 it passes through the y axis one time
Answer:
Step-by-step explanation:
Let and be independent random variables representing the lifetime (in 100 hours) of Type A and Type B light bulbs, respectively. Both variables have exponential distributions, and the mean of X is 2 and the mean of Y is 3.