求导,求过程?
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解y'=-1/2[(x+3)√(3+2x-x^2)]'
=-1/2[(x+3)'√(3+2x-x^2)+(x+3)√(3+2x-x^2)']
=-1/2[√(3+2x-x^2)+(x+3)*1/2√(3+2x-x^2)×(3+2x-x^2)']
=-1/2[√(3+2x-x^2)+(x+3)*1/2√(3+2x-x^2)×(2-2x)]
=-1/2[√(3+2x-x^2)+(x+3)√(3+2x-x^2)×(1-x)]
=-1/2[√(3+2x-x^2)+(x+3)(1-x)√(3+2x-x^2)]
=-1/2[(x+3)'√(3+2x-x^2)+(x+3)√(3+2x-x^2)']
=-1/2[√(3+2x-x^2)+(x+3)*1/2√(3+2x-x^2)×(3+2x-x^2)']
=-1/2[√(3+2x-x^2)+(x+3)*1/2√(3+2x-x^2)×(2-2x)]
=-1/2[√(3+2x-x^2)+(x+3)√(3+2x-x^2)×(1-x)]
=-1/2[√(3+2x-x^2)+(x+3)(1-x)√(3+2x-x^2)]
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大哥,倒数第二个等号,根号是不是应该在分母?
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