A polynomial of degree 2 which takes values `y_0,y_1,y_2` at points `x_0,x_1,x_2` respectively , is given by `p(x) = ((x-x_1)(x-x_2))/((x_0-x_1)(x_0-x_2)) y_0 + ((x-x_0)(x-x_2))/((x_1-x_0)(x_1-x_2)) y_1 + ((x-x_0)(x-x_1))/((x_2-x_0)(x_2-x_1)) y_2` A polynomial of degree 2 which takes values `y_0, y_0, y_1` at points `x_0, x_(0+t), x_1` `t!=0` is given by