| clear | |
| syms n y | |
| y = 0; | |
| n = 0; | |
| while y <= 3 | |
| n = n+1; | |
| y = y+1/(2*n-1); | |
| end | |
| if y > 3 | |
| n = n-1; | |
| end | |
| disp 'y<3ʱ,����nֵΪ' | |
| n | |
| y = y-1/(2*n+1) |
| clear | |
| syms n y | |
| y = 0; | |
| n = 0; | |
| while y <= 3 | |
| n = n+1; | |
| y = y+1/(2*n-1); | |
| end | |
| if y > 3 | |
| n = n-1; | |
| end | |
| disp 'y<3ʱ,����nֵΪ' | |
| n | |
| y = y-1/(2*n+1) |