dy | dx | ||
=− | |||
y | x |
c | ||
y= | ||
x |
c'x−c | ||
y'= | ||
x2 |
c'x−c | c | |||
x* | + | =xsinx
| ||
x2 | x |
sinx −xcosx + c1 | sinx | c1 | ||||
y= | = | −cosx + | ||||
x | x | x |
1 | ||
y' + | y = sinx. | |
x |
1 | 1 | 1 | 1 | |||||
y = | ∫qudx = | ∫xsinxdx = | (−xcosx + ∫cosxdx) = | *(sinx − xcosx + c). | ||||
u | x | x | x |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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