Let $ X = x i+ y j+z k$, and $r=||X||$. Prove that $\nabla (\frac{1}{r})=-\frac{X}{r^3}.$
Answer
Answers can only be viewed under the following conditions:
- The questioner was satisfied with and accepted the answer, or
- The answer was evaluated as being 100% correct by the judge.
Erdos
4.7K
The answer is accepted.
Join Matchmaticians Affiliate Marketing
Program to earn up to a 50% commission on every question that your affiliated users ask or answer.
- answered
- 526 views
- $15.00
Related Questions
- Explain partial derivatives.
- Prove that $\int_0^1 \left| \frac{f''(x)}{f(x)} \right| dx \geq 4$, under the given conditions on $f(x)$
- Calculating the derivatative
- Help formulating sine function
- Solve this business calculus problem please.
- Multivariable Calc: Vectors, Equations of Lines, Shapes of Curves
-
Limit graphs
- How to parameterize an equation with 3 variables