数学微积分题求∫(从0积到π/2)xsinx dx

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数学微积分题求∫(从0积到π/2)xsinxdx数学微积分题求∫(从0积到π/2)xsinxdx数学微积分题求∫(从0积到π/2)xsinxdx∫xsinxdx=-∫xdcosx=-xcosx+∫co

数学微积分题求∫(从0积到π/2)xsinx dx
数学微积分题
求∫(从0积到π/2)xsinx dx

数学微积分题求∫(从0积到π/2)xsinx dx
∫xsinxdx
=-∫xdcosx
=-xcosx+∫cosxdx
=-xcosx+sinx(0到π/2)
=(0+1)-(0+0)
=1