The coefficient of 1/r cos ? in the general solution of u_rr + 1/r u_r + 1/r^2 u_?? = 0; 1 < r < 2, u(1, ?) = cos ? u(2, ?) = sin 2?; 0 ? ? ? 2? is a. -1 b. 4/3 c. -1/2 d. 4/15 e. -4/15 f. -1/3 g. 1/2 h. 1
Added by Gonzalo Y.
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To begin, we can use the quadratic equation to solve for efl in the general solution. EFfl = (7u+9)2 - 4(2+9)cos281 - sin281 We can simplify this equation by dividing both sides by 7u+9. EFfl = 7u+9*2 - 4(2+9)*cos281 - sin281 Show more…
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