∫dx/sin^2(2x-3)=?
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∫dx/sin^2(2x-3)=?∫dx/sin^2(2x-3)=?∫dx/sin^2(2x-3)=?由于dx=d(2x-3)/2所以Int(dx/sin(2x-3)^2)=Int(d(2x-3)/s
∫dx/sin^2(2x-3)=?
∫dx/sin^2(2x-3)=?
∫dx/sin^2(2x-3)=?
由于dx=d(2x-3)/2
所以
Int(dx/sin(2x-3)^2)
=Int(d(2x-3)/sin(2x-3)^2)/2
=-cot(2x-3)/2+C
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