https://vtuupdates.com/solved-model-papers/solve-%f0%9d%9c%952%f0%9d%91%a7-%f0%9d%9c%95%f0%9d%91%a52-%f0%9d%91%a5%f0%9d%91%a6-subject-to-the-conditions/
Solve 𝜕^2𝑧/𝜕𝑥^2=𝑥𝑦 subject to the conditions 𝜕𝑧/𝜕𝑥=log(1+𝑦), when 𝑥=1 and 𝑧=0, when 𝑥=0.07