Saved Bookmarks
| 1. |
Find the derivative:v = (1 - 4 cos 5y)-1/2 |
|
Answer» \(v = (1 - 4 \,cos\,5y)^{\frac{-1}{2}}\) \(\frac{dv}{dy} = \frac{-1}{2}(1 - 4\,cos\,5y)^{\frac{-3}2} \,\frac d{dy}(1 - 4\,cos \,5y)\) \(= \frac{-1}{2}(1 -4\, cos \,5y)^{\frac{-3}2} \,x -4x - 5 sin\,5y\) \(= - 10 \,sin\,5y(1 -4 \,cos\,5y)^{\frac{-3}{2}}\) |
|