6. Use a property of derivatives of vector valued functions to show that # [F(t) × F'(t)] = F(t) × r"(t)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
6. Use a property of derivatives of vector-valued functions to show that 

\[
\frac{d}{dt} [\mathbf{r}(t) \times \mathbf{r}'(t)] = \mathbf{r}(t) \times \mathbf{r}''(t)
\]
Transcribed Image Text:6. Use a property of derivatives of vector-valued functions to show that \[ \frac{d}{dt} [\mathbf{r}(t) \times \mathbf{r}'(t)] = \mathbf{r}(t) \times \mathbf{r}''(t) \]
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