Given <em>f(x)</em> = 3/<em>x</em>, its derivative is
![\displaystyle f'(x) = \lim_{h\to0}\frac{f(x+h)-f(x)}h](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7Bf%28x%2Bh%29-f%28x%29%7Dh)
![\displaystyle f'(x) = \lim_{h\to0}\frac{\dfrac3{x+h}-\dfrac3x}h](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B%5Cdfrac3%7Bx%2Bh%7D-%5Cdfrac3x%7Dh)
![\displaystyle f'(x) = \lim_{h\to0}\frac{\dfrac{3x-3(x+h)}{x(x+h)}}h](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B%5Cdfrac%7B3x-3%28x%2Bh%29%7D%7Bx%28x%2Bh%29%7D%7Dh)
![\displaystyle f'(x) = \lim_{h\to0}\frac{3x-3(x+h)}{hx(x+h)}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B3x-3%28x%2Bh%29%7D%7Bhx%28x%2Bh%29%7D)
![\displaystyle f'(x) = \lim_{h\to0}\frac{3x-3x-3h}{hx(x+h)}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B3x-3x-3h%7D%7Bhx%28x%2Bh%29%7D)
![\displaystyle f'(x) = \lim_{h\to0}\frac{-3h}{hx(x+h)}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B-3h%7D%7Bhx%28x%2Bh%29%7D)
![\displaystyle f'(x) = \lim_{h\to0}\frac{-3}{x(x+h)} = \boxed{-\frac3{x^2}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20f%27%28x%29%20%3D%20%5Clim_%7Bh%5Cto0%7D%5Cfrac%7B-3%7D%7Bx%28x%2Bh%29%7D%20%3D%20%5Cboxed%7B-%5Cfrac3%7Bx%5E2%7D%7D)
Divide 4 on both sides. 276 divided by 4 equals 69. final answer: w=69
Answer:
The answer is 20 watts
Step-by-step explanation:
power=joules/seconds
60/3=20
Answer:
-20º C
Step-by-step explanation:
-4*5=-20