[最も選択された] U-v=(x-y)(x^2 4xy Y^2) 295700-U-v=(x-y)(x^2+4xy+y^2)
Functions Of Severable Variables WebStack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, andWebClick here👆to get an answer to your question ️ If u = f(r) , where r^2 = x^2 y^2 then ( ∂^2u∂x^2 ∂^2u∂y^2 ) = Solve Study Textbooks Guides Join / Login Question U-v=(x-y)(x^2+4xy+y^2)