⚠ (partial)/(partial x)(4x^{-x^2-y^2-z^2}) is read as (partial)/(partial x)*(4x^{-x^2-y^2-z^2}): use (...)*(...) for multiplication, use (...)^(...) for a power■(partial)/(partial x)(4x^{-x^2-y^2-z^2}) is read as (partial)/(partial x)(4x^(-x^2-y^2-z^2)): use ^(...) to group an exponent, use * to multiply