D
doducnam


[tex]\int_{}^{}\frac{dx}{1.sinx}[/tex]
[tex]\int_{}^{}cos\frac{x}{2}cos\frac{x}{3}[/tex]
[tex]\int_{}^{}\sqrt[2]{e^x-1}[/tex]
[tex]\int_{}^{}cos\frac{x}{2}cos\frac{x}{3}[/tex]
[tex]\int_{}^{}\sqrt[2]{e^x-1}[/tex]
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