Higher number, y = the derivative of e ^ x (cosx + xsinx),

Using the formula: (UV) '= u' V + UV 'y = e ^ x · (cosx + xsinx) y' = (e ^ x) '· (cosx + xsinx) + e ^ x · (cosx + xsinx)' = e ^ x · (cosx + xsinx) + e ^ x · [(cosx) '+ (xsinx)'] = e ^ x · (cosx + xsinx) + e ^ x · [- SiNx + SiNx + X · cosx] = e ^ x · (cosx + xsinx) + e ^ x

RELATED INFORMATIONS

1. Find the monotone interval of function f (x) = 2 / × + SiNx Is there any wood to be broken?
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12. Let f (x) = xsinx (x ∈ R). If x ∈ (- π / 2,3 π / 2) and f (x) ≥ (- 1 / 2) x, the value range of X is obtained
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