Asked by Keshin H.
Estimate the value of the definite integral
∫ 7
1 (3/x)dx
by computing left-hand and right-hand sums with 3 and 6 subdivisions of equal length.
A. n=3 left-hand sum =
B. n=3 right-hand sum =
C. n=6 left-hand sum =
D. n=6 right-hand sum =
∫ 7
1 (3/x)dx
by computing left-hand and right-hand sums with 3 and 6 subdivisions of equal length.
A. n=3 left-hand sum =
B. n=3 right-hand sum =
C. n=6 left-hand sum =
D. n=6 right-hand sum =
Answers
Answered by
oobleck
I'll do one; you can try the others. Post your work if you get stuck. There are online Riemann Sum calculators you can use.
f(x) = 3/x
with 6 subintervals, that gives you
∆x = (7-1)/6 = 1
Right Sum = 1*(f(2)+f(3)+f(4)+f(5)+f(6)+f(7))
= 3/2 + 3/3 + 3/4 + 3/5 + 3/6 + 3/7 = 669/140
f(x) = 3/x
with 6 subintervals, that gives you
∆x = (7-1)/6 = 1
Right Sum = 1*(f(2)+f(3)+f(4)+f(5)+f(6)+f(7))
= 3/2 + 3/3 + 3/4 + 3/5 + 3/6 + 3/7 = 669/140
Answered by
Keshin H.
thanks man!
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