Consider the function f(z) = z/|z|. (a) Write f(z) in complex standard form f = u+iv. In other words, determine Re f(z) and Im f(z). (b) Use Mathematica to plot u and v. Hint: use command Plot3D. (c) Find the limit of f(z) as z approaches 0 along each of the following paths: • the negative side of the real axis, • the positive side of the real axis, • the negative side of the imaginary axis, • the positive side of the imaginary axis. (d) Find the limit of f(z) as z approaches ∞ along each of the following paths: • the positive side of the real axis, • the positive side of the imaginary axis.
Consider the function f(z) = z/|z|. (a) Write f(z) in complex standard form f = u+iv. In other words, determine Re f(z) and Im f(z). (b) Use Mathematica to plot u and v. Hint: use command Plot3D. (c)...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...