2021-11.md

course	course_year	question_number	tags	title	year
Complex Methods	IB	11	IB 2021 Complex Methods	Paper 3, Section I, B	2021

Find the value of $A$ for which the function

$$\phi(x, y)=x \cosh y \sin x+A y \sinh y \cos x$$

satisfies Laplace's equation. For this value of $A$, find a complex analytic function of which $\phi$ is the real part.