Recent content by zebra

Find the general solution of y' + 2ty = 0 Do you have a prescribed method (like series?) If not, it is very simple Devide the Eq by y and you get y´/y = -2t Integrate ln(y) = -t2 y=exp(-t2) + C that is the general solution

Hi, the derivative of a function in the direction of a vector is just a scalar product of the (unit) vector with the gradient of the function. 1) get the point P(x0,y0,z0) by plugging pi/3 for t into the parametric equation of the helix. P=(-1,0,pi) 2) get the velocity vector of the helix...