3. lf and y=10 when x =5, what isywhen x = ?(AB)5 (AC)9 (AD)(AE)(BC)8 (BD)7 (BE)6

20、Consider the following partial differential equation for the bivariate function v(x, t)subject to conditionsExpress the solution v(x, t) in the following formfor some constants an, bn, pn, qn, rn ∈ R satisfying 0 ≤ r0 ＜ r1 ＜ r2 ＜ ... and ＞0for n = 1, 2, ... Which of the following statements is/are true?(A) a0 = - (B) b1 = (C) p3 = (D) r4 = (E) None of the above is true.