(1 point) Use Euler's method with the given step size to estimate y(1.4) where y(x) is the solution of the initial-value problem 1. Estimate y(1.4) with a step size h = 0.2. Answer: y(1.4) 2. Estimate y(1.4) with a step size h = 0.1. Answer: y(1.4) y=xxy, y(1) = 3. (1 point) Find the equation of the tangent plane to z = e+x+x +2 at the point (1,0,5). z= (1 point) Find the linearization L(x, y, z) of the f(x, y, z) = 2x + 1 + z at the point (1,2,3). Answer: L(x, y, z) = (1 point) Letv (-3, 0, -5). Find a unit vector in the same direction as v.