Svar Övning 7.5.3
SamverkanFlervariabelanalysLIU
(Skillnad mellan versioner)
Rad 6: | Rad 6: | ||
c) | c) | ||
- | <math>\nabla f= | + | <math>\nabla f= |
+ | \frac{1}{|\mathbf{x}|}\mathbf{e}_x-\frac{x_1}{|\mathbf{x}|^3}\mathbf{x} | ||
+ | </math> |
Nuvarande version
a) \displaystyle \nabla f=\mathbf{a}
b) \displaystyle \nabla f=\frac{\mathbf{x}}{|\mathbf{x}|}
c) \displaystyle \nabla f= \frac{1}{|\mathbf{x}|}\mathbf{e}_x-\frac{x_1}{|\mathbf{x}|^3}\mathbf{x}