Integrate[1 - (r*Sin[theta])^2 -(r*Cos[theta])^2 , {theta, 0, Pi/2}, {r, 0, 1}]Integrate[1 - (r*Sin[theta])^2 -(r*Cos[theta])^2 , {theta, 0, Pi/2}, {r, 0, 1}]

• Natural Language
• Math Input