Question

@freckles

Answer 1

Sounds like you need to find the upper and lower sum first.

Then use trapezoid rule.

Answer 2

@wade123 did you finish the last question with the rule you gave me or with the rule I gave you.

Answer 3

anyways can you find any of the sums mentioned?

Answer 4

or have you?

Answer 5

This is the graph of f(x)=x^2 on the interval [0,2]
Draw 4 rectangles with equal base starting from the right endpoint and find the sum of the areas of those rectangles.
That will give you an upper sum.


Now draw 4 rectangles with equal base starting from the left endpoint and find the sum of the areas of those rectangles.
That will give you a lower sum.

Then find the average of those sums. That do (upper sum+lower sum)/2 .

Then since you understand the trapezoid rule use it to estimate the integrate of x^2 from x=0 to x=2.