不定積分、定積分

Integrate[式、変数]>
Integrate[x^2,{x,0,1}]
Integrate[E^(-x^2),{x,0,Infinity}]
NIntegrate[Sqrt[Sin[x]], {x,1,2}]
NIntegrate[Sqrt[Sin[x]], {x,1,2}, WorkingPrecision->50,AccuracyGoal->40]