4. Ifandy= I when x = 2, what is y when x = 1?(AB)1.14(AC)-1.14 (AD) 2.14 (AE) -2.24 (BC) 3.14 (BD) -3.14 (BE) None of the above.

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.

4. Ifandy= I when x = 2, what is y when x = 1?(AB)1.14(AC)-1.14 (AD) 2.14 (AE) -2.24 (BC) 3.14 (BD) -3.14 (BE) None of the above.

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