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积分号(2到-2)根号下4-x^2(sinx+1)dx

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/06 03:03:16
积分号(2到-2)根号下4-x^2(sinx+1)dx
∫[2,-2]√(4-x^2)(sinx+1)dx
=∫[2,-2]√(4-x^2)sinxdx+∫[2,-2]√(4-x^2)dx
=0+x√(4-x^2)|[2,-2] +∫[2,-2]dx/√(4-x^2)
=∫[2,-2]d(x/2)√(1-(x/2)^2)
=arcsin(x/2)|[2,-2]
=-π/2-π/2
=-π
∫[2,-2]√(4-x^2)sinxdx √(4-x^2)sinx是奇函数,
=0