Split up the interval [1, 9] into <em>n</em> subintervals of equal length (9 - 1)/<em>n</em> = 8/<em>n</em> :
[1, 1 + 8/<em>n</em>], [1 + 8/<em>n</em>, 1 + 16/<em>n</em>], [1 + 16/<em>n</em>, 1 + 24/<em>n</em>], …, [1 + 8 (<em>n</em> - 1)/<em>n</em>, 9]
It should be clear that the left endpoint of each subinterval make up an arithmetic sequence, so that the <em>i</em>-th subinterval has left endpoint
1 + 8/<em>n</em> (<em>i</em> - 1)
Then we approximate the definite integral by the sum of the areas of <em>n</em> rectangles with length 8/<em>n</em> and height
:

Take the limit as <em>n</em> approaches infinity and the approximation becomes exact. So we have

Answer:
Happy Earth Day to u too.
Step-by-step explanation:
1) Plant a sapling
2) Draw a poster related to Earth Day
3) Color a picture of the Earth/ tree
4) Decorate ur room with plants
5) Prepare a speech on Earth Day
6) Do T-shirt designing with Earth as a design
7) Buy a paper/ cloth bag
8) Recycle what u use
9 Avoid plastic
10) Use bikes or walk instead of vehicles
Answer:
sorry i cant answer that one man.
Step-by-step explanation:
Answer:
$257.33 on Apex it’s correct, I took the quiz
Step-by-step explanation:
Answer:
Step-by-step explanation:
5,500$ lol