Discover Questions

Wife keeps trying to do math? A football is kicked from the ground with a velocity of 40 m/s at an angle of 36.9°. How long is the football in the air? What is the integral of dx/sqrt(9x^2-4)? Could you show me how to work this problem? If U1 and U2 are subspaces of the vector space V. Prove that U1+U2 is also a subspace of V?