d/dx∫[x^2→0]xsin(t^2)dt

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d/dx∫[x^2→0]xsin(t^2)dtd/dx∫[x^2→0]xsin(t^2)dtd/dx∫[x^2→0]xsin(t^2)dtd/dx∫[x^2→0]xsin(t^2)dt=∫[x^2→0

d/dx∫[x^2→0]xsin(t^2)dt
d/dx∫[x^2→0]xsin(t^2)dt

d/dx∫[x^2→0]xsin(t^2)dt
d/dx∫[x^2→0]xsin(t^2)dt=∫[x^2→0]sin(t^2)dt-2(x^2)sin(x^4),(x^2是下限,是上限取+号)