求不定积分∫xcos(x^2)dx
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求不定积分∫xcos(x^2)dx
![求不定积分∫xcos(x^2)dx](/uploads/image/z/9935912-56-2.jpg?t=%E6%B1%82%E4%B8%8D%E5%AE%9A%E7%A7%AF%E5%88%86%E2%88%ABxcos%28x%5E2%29dx)
∫xcos(x^2)dx
=∫cos(x^2)(xdx)
=∫cos(x^2)(d(x^2)/2)
=(1/2)∫cos(x^2)d(x^2)
=(1/2)sin(x^2)+C
=∫cos(x^2)(xdx)
=∫cos(x^2)(d(x^2)/2)
=(1/2)∫cos(x^2)d(x^2)
=(1/2)sin(x^2)+C
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