设函数F(x,y)=∫_0^xy【sin愠t⼀(1+t^2 ) dt],则(Ȣ^2 F)⼀(Ȣx^2 )|_(x=0,y=2)=?

2025-01-21 12:19:42
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要求∫_0^2pi▒〖(sin⁡(t/2)⁡ )^5〗dt, 先化sin(t/2)的四次方,(sin(t/2))^4=(1-(cos(t/2))^2)^2=1-2(cos(t/2))^2+(cos(t...