Answer:
X=4-9
Step-by-step explanation:
BOOM IM SMERT
Split up the integration interval into 6 subintervals:
![\left[0,\dfrac\pi4\right],\left[\dfrac\pi4,\dfrac\pi2\right],\ldots,\left[\dfrac{5\pi}4,\dfrac{3\pi}2\right]](https://tex.z-dn.net/?f=%5Cleft%5B0%2C%5Cdfrac%5Cpi4%5Cright%5D%2C%5Cleft%5B%5Cdfrac%5Cpi4%2C%5Cdfrac%5Cpi2%5Cright%5D%2C%5Cldots%2C%5Cleft%5B%5Cdfrac%7B5%5Cpi%7D4%2C%5Cdfrac%7B3%5Cpi%7D2%5Cright%5D)
where the right endpoints are given by

for
. Then we approximate the integral

by the Riemann sum,


Compare to the actual value of the integral, which is exactly 4.
Answer: Kilograms is the SI for mass
Using the distributive property (2x-1)5!