Please solve questio 23,24,25,26

Question 23 If z= x-iy then the value of | sinz | is a. sin-t +sin y b. sin-c + cos-y C. sin'a + sinh-y d. sinr + coshy Question 24 If = xtiy then the function f(z) = can be expressed in the form ofutiv where u and v both are function of x and y then u is a. + 1+a D. 1-) +y* 1+ C (1+y) +r d. -+ Question 25 Show that u(x,y)= sinxcoshy + 2cosxsinhy satisfies Laplace equation in dimensions. Also find f(z) Question 26 Which of the following functions can not be the real part of a complex analytic function of z= x+iy . y b. x2 - y c. ' - 3xy d. 34-y-y-

1 Answer(s)