We have next data: x : -2 -1.75 -1.5 -1.25 -1 -0.75 -0.5 -0.25 y : -4.9965 -4.8877 -4.7476 -4.568 -4.3373 -4.0412 -3.661 -3.173 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 -2.546 -1.741 -0.7075 0.6195 2.3236 4.5115 7.3211 10.9285 15.56 . 1. Compute the derivates in all points xi. 2. Find an interpolating polynomial for xi and compute the derivatives in xi for this polynomial. 3. Approximate this points by a function (determine this function from the data!!!) and compute the derivates of this function in xi.