given-four-differentiable-functions-of-ypqry-p-q-r-and-ss-what-is-the-derivative

Question

For the given four differentiable functions ﻿(p,q,r,s)\left(p,q,r,s\right)(p,q,r,s)﻿ of ﻿y,y,y,﻿ what is the derivative of their product pqrspqrs?

Accepted Answer

pqrs′+pqr′s+pq′rs+p′$$qrspqrs^{\prime}+$$pqr^{\prime}$$s+pq^{\prime}$rs+p^{\prime}$$qrs

Answer

pqrs′+pqr′s+pq′rs+p′q′$$rspqrs^{\prime}+$$pqr^{\prime}$$s+pq^{\prime}rs+p$$^{\prime}$$q^{\prime}rs$$

Answer

pqrs′+pqr′s+pq′r′s+p′$$qrspqrs^{\prime}+$$pqr^{\prime}$$s+pq^{\prime}r$$^{\prime}$$s+p^{\prime}$$qrs

Answer

pq′rs′+pqr′s+pq′rs+p′$$qrspq^{\prime}rs$$^{\prime}$$+pqr^{\prime}s+pq$$^{\prime}$$rs+p^{\prime}$$qrs

For the given four differentiable functions (p,q,r,s)\(\left\)(p,q,r,s\(\right\))(p,q,r,s) of y,y,y, what is the derivative of their product pqrspqrs?