This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...+ + bn sin 11 x, we choose the origin at the point where the wave crosses the axis, so that yo = 0, divide the half-period into 12 equal parts, and measure the 11 ordinates yu yi yn. Thus we have 165 yu For the coefficients we have the following equations: 6 ai = yi cos 150 + y2 cos 300 + + yn cos 1650. 6ai = yi cos ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 Excerpt: ...+ + bn sin 11 x, we choose the origin at the point where the wave crosses the axis, so that yo = 0, divide the half-period into 12 equal parts, and measure the 11 ordinates yu yi yn. Thus we have 165 yu For the coefficients we have the following equations: 6 ai = yi cos 150 + y2 cos 300 + + yn cos 1650. 6ai = yi cos 450 + y2 cos 900 + + yn cos 4950. Example. Fig. 906 represents a half-period of an e.m.f. wave whose frequency is 60 cycles. We wish to find the odd harmonics up to the nth order. Choose the x-axis midway between the highest and lowest points of the complete wave and the origin at the point where the wave crosses the x-axis in the positive direction. Divide the half-period into 12 equal parts and measure the ordinates yi, yi..., yn. These are given in the following table: sum of the amplitudes, taken alternately plus and minus, of the nth, 3 nth, 5 nth, ... sine components. We arrange the work in the above computing form. 4 21 19 27 29 33 37 + 69-75 = 31 = n 33 30 50 38 46 51-33 = 18 = r2 Sums (s) Check: ai+a3 + bl-b3+ Result: y =--11.27 cos x + 4.07 cos 3 x + 0.05 cos 5 x + 0.72 cos 7 x--0.40 cos 9 x + 6.83 cos 11 x + 40.95 sin x + 6.65 sin 3 x + 1.42 sin 5 x + 0.68 sin 7 x + 0.65 sin 9 x + 2.68 sin 11 x. (Ill) Odd harmonics up to the seventeenth.--Given a symmetric curve and wishing to determine the coefficients in the equation y = ai cos x + a3 cos 3 x + + an cos 17 x + bi sin x + b3 sin 3 x + + bii sin 17 x, we choose the origin at the point where the wave crosses the axis, so that yo = 0, divide the half-period into 18 equal parts, and measure the 17 ordinates ylt yi, ..., y7. Thus we have If we use the same method as that employed in deriving the n-ordi; nate scheme, we shall arrive at the following 17-ordinate computing formj This form is s.
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Add this copy of Graphical and Mechanical Computation to cart. $24.65, new condition, Sold by Paperbackshop rated 4.0 out of 5 stars, ships from Bensenville, IL, UNITED STATES, published 2013 by Hardpress Publishing.
Add this copy of Graphical and Mechanical Computation to cart. $26.25, very good condition, Sold by Keeper of the Page rated 4.0 out of 5 stars, ships from Enumclaw, WA, UNITED STATES, published 1918 by John Wiley & Sons.
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Near Fine. No Exp John Wiley & Sons 1918 Minimal wear to blue cloth with gold spine lettering. Pos penciled inside cover. Bright unmarked text, illustrated with equations and graphs with multi-page charts inside back pocket. x+259+4(index) Pages. HEAVY ITEM 1.5 Pounds.
Add this copy of Graphical and Mechanical Computation... to cart. $34.48, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2013 by Hardpress Publishing.
Add this copy of Graphical and Mechanical Computation to cart. $36.55, good condition, Sold by BookDepart rated 4.0 out of 5 stars, ships from Shepherdstown, WV, UNITED STATES, published 1918 by John Wiley & Sons.
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UsedGood. Hardcover; surplus library copy with the usual stampings; reference number taped to spine; fading and edge wear to exterior; otherwise in good conditi on with clean text, firm binding. ASIN: B0076F2XG6.
Add this copy of Graphical and Mechanical Computation to cart. $39.65, fair condition, Sold by Anybook rated 5.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1918 by John Wiley and Sons.
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This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In fair condition, suitable as a study copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 750grams, ISBN:
Add this copy of Graphical and Mechanical Computation to cart. $40.56, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2010 by Nabu Press.
Add this copy of Graphical and Mechanical Computation-Part I. Alignment to cart. $41.08, good condition, Sold by ThriftBooks-Dallas rated 5.0 out of 5 stars, ships from Dallas, TX, UNITED STATES, published by John Wiley & Sons.
Add this copy of Graphical and Mechanical Computation to cart. $54.95, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2015 by Palala Press.
