计算机营养（Computer nutrition）.doc

计算机营养（Computer nutrition） 1~~~A The form form1 is designed. There are command buttons command1 and combo box Combo1 in the form. When you click the command button, you calculate the following Series and S, when the first occurrence and the number S is greater than 5000, terminate the sum, and show the results in combo1. 1 x 2, -2 * 3,3 * 4, -4 * 5,... (-1) ^ (n-1) * n * (n+1),... (of which ^ represents power operations) ~ Five thousand two hundred and two Commend1 S=0 N=1 Do while s=5000 S=s+ (-1) ^ (n-1) *n* (n+1) N=n+1 Enddo Tbo1.additem (STR (s)) 2~~~A The form form1 is designed. There are command buttons command1 and text box text1 in the form. When you click the command button, you calculate the following The sum of the first 50 items of a sequence (set x=2.5, which takes 4 decimal places). The results are shown in text1. Sin (x), /x, sin (2x), /x^2, sin (3x) /x^3,...... Sin (n * x) /x^n,...... (of which sin is a sine function and ^ means power operations) ~ Zero point one three two nine Commend2 S=0 X=2.5 For n=1 to 50 S=s+sin (x*n) /x^n Endfor Thisform.text1.value=str (s, 10,4) ~3~~A The form form1 is designed. There are command buttons command1 and edit box Edit1 in the form. When you click the command button, you calculate the following The sum of the first 35 of a series (the result is 4 decimal places). The results are shown in edit1. 1/3, 3/5, 5/7, 7/9, 9/11, 11/13, 13/15,...... (2n-1) / (2n+1) ~ Thirty-one point four five two nine Commend3 S=0 For n=1 to 35 S=s+ (2*n-1) / (2*n+1) Endfor Thisform.edit1.value=str (s, 10,4) 4~~~A The design form form1 has the command button command1 in the form, an edit box Edit1 and a text box text1, in Edit1 Enter the following: The authors would like to sincerely thank series editor David Chappell For, his, invaluable, assistance, in, reviewing, several, early, drafts, of,, the, manuscript, and, providing Unwavering, clarity, and, vision, during, rewrites, to, major, guide, the, book,, toward, its, current, form. We, wo