Midpoint Riemann sums with a calculator Consider the following definite integrals. a. Write the midpoint Riemann sum in sigma notation for an arbitrary value of n. b. Evaluate each sum using a calculator with n = 20, 50, and 100. Use these values to estimate the value of the integral. 78. ∫ 0 1 1 π ( sin − 1 x + 1 ) d x
Midpoint Riemann sums with a calculator Consider the following definite integrals. a. Write the midpoint Riemann sum in sigma notation for an arbitrary value of n. b. Evaluate each sum using a calculator with n = 20, 50, and 100. Use these values to estimate the value of the integral. 78. ∫ 0 1 1 π ( sin − 1 x + 1 ) d x
Solution Summary: The author calculates the midpoint Riemann sum in sigma notation for an arbitrary value of n.
Midpoint Riemann sums with a calculator Consider the following definite integrals.
a. Write the midpoint Riemann sum in sigma notation for an arbitrary value of n.
b. Evaluate each sum using a calculator with n = 20, 50, and 100. Use these values to estimate the value of the integral.
78.
∫
0
1
1
π
(
sin
−
1
x
+
1
)
d
x
With differentiation, one of the major concepts of calculus. Integration involves the calculation of an integral, which is useful to find many quantities such as areas, volumes, and displacement.
3.17 (B). A simply supported beam has a span of 6 m and carries a distributed load
which varies in a linea manner from 30 kN/m at one support to 90 kN/m at the
other support. Locate the point of maximum bendin moment and calculate the value
of this maximum. Sketch the S.F. and B.M. diagrams. [U.L.] [3.25 m from l.h. end;
272 KN m
30.
90
3.11 (B). A beam, 12 m long, is to be simply supported at 2m from each end and to
carry a U.d.l of 30kN/m together with a 30 KN point load at the right-hand end.
For ease of transportation the beam is to be jointed in two places, one joint being
Situated 5 m from the left-hand end. What load (to the nearest KN) must be
applied to the left-hand end to ensure that there is no B.M. at the joint (i.e. the
joint is to be a point of contraflexure)? What will then be the best position on the
beam for the other joint? Determine the position and magnitude of the maximum
B.M. present on the beam. [114 KN, 1.6 m from r.h. reaction; 4.7 m from 1.h. reaction;
43.35 KN m.]
2. Using vector algebraic operations, if
-
Ả = 2ây – mây – C
-
B = mây tây – 2,
C = ây + mây + 20,
D = m x + mây tậ
Z
Find the value(s) of m such that (a) Ả is
perpendicular to B (b) B is parallel to C
University Calculus: Early Transcendentals (4th Edition)
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