H oh oh oh ola oholglvl k,
Step-by-step explanation:
A left Riemann sum approximates a definite integral as:

Given ∫₂⁸ cos(x²) dx:
a = 2, b = 8, and f(x) = cos(x²)
Therefore, Δx = 6/n and x = 2 + (6/n) (k − 1).
Plugging into the sum:
∑₁ⁿ cos((2 + (6/n) (k − 1))²) (6/n)
Therefore, the answer is C. Notice that answer D would be a right Riemann sum rather than a left (uses k instead of k−1).
Answer:
Step-by-step explanation:

The answers are:
x = 13
y = -11
Answer:
No
Step-by-step explanation:
23.64112 > 23.6404
Reason : 1/1000 place value in 23.64112 is 1.
1/1000 place value in 23.6404 is 0.