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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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384 Approximate Calculations \Ch. 10<br />

i<br />

3162. Us<strong>in</strong>g the Simpson formula, calculate V *<br />

.<br />

*<br />

to four<br />

J * r *<br />

o<br />

limit A of abso-<br />

decimal places, tak<strong>in</strong>g n== 10. Establish the upper<br />

lute error, us<strong>in</strong>g the error Formula given <strong>in</strong> the text.<br />

Calculate the follow<strong>in</strong>g def<strong>in</strong>ite <strong>in</strong>tegrals to two decimals:<br />

3,63. Ife.<br />

1 Jl<br />

3164. C -~. 3169.<br />

2<br />

-<br />

3,68. (-!<br />

><br />

,<br />

FT dX.<br />

Jcos* \+X<br />

3173. Evaluate to two decimal places the improper <strong>in</strong>tegral<br />

a PPlyi nS the substitution ^ -7-- Verify<br />

the calculations<br />

1 ft Jy<br />

by apply<strong>in</strong>g Simpson's formula to the <strong>in</strong>tegral \ rr 2 , where b<br />

+ QO J * ~r x<br />

is chosen ,so that 2 < 10<br />

7^72<br />

3174, A plane figure bounded by a half-wave of the s<strong>in</strong>e curve<br />

f/=s<strong>in</strong>^ and the *-axis is <strong>in</strong> rotation about the x-axis. Us<strong>in</strong>g the<br />

Simpson formula, calculate the volume ot the solid of rotation<br />

to two decimal places.<br />

3175*. Us<strong>in</strong>g Simpson's formula, calculate to two decimal<br />

places the length ot an arc of the ellipse y + ^ 2 = 1 situated<br />

<strong>in</strong> the first quadrant.<br />

Sec. 5. Numerical Integration of Ord<strong>in</strong>ary Differential Equations<br />

1. A method of successive approximation (Picard's method). Let there<br />

be given a first-order differential equation<br />

subject to the <strong>in</strong>itial condition / = # when x = * .<br />

y'^f(x.y)

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