Knowing that y(x) = C -4 (x > 0) is a solution to xy" â 8 xy' â 52 y = 0, x > 0, use the substitution y = x -4 u(a) to find the solution to the initial value problem with y(1) = 2 and y (1) = 9. Tips for typing symbolic expression: 1. All operation should be explicit: for 3x2 + sin(2x), type 3*x^2 + sin(2*x). 2. All number must be rational: instead of using 0.25, type 1/4. 3. Use^or ** for exponents: for e type e^(-2*x). Don't forget to use parenthesis. 4. Use pi for . 5. Use log(x) for In(x). 1 y(2) symbolic expression ?