![\bf f(x)=x+\cfrac{1}{x}\qquad \left[\frac{1}{2},2 \right]\\\\ -----------------------------\\\\ \cfrac{df}{dx}=1+\left(-1x^{-2} \right)\implies \cfrac{df}{dx}=1-\cfrac{1}{x^2} \\\\\\ f'(c)=1-\cfrac{1}{c^2}\quad \quad 1-\cfrac{1}{c^2}=\cfrac{f(2)-f\left( \frac{1}{2} \right)}{2-\frac{1}{2}} \\\\\\ 1-\cfrac{1}{c^2}=\cfrac{\frac{5}{2}-\frac{5}{2}}{\frac{3}{2}}\implies 1-\cfrac{1}{c^2}=\cfrac{0}{\frac{3}{2}}\implies 1-\cfrac{1}{c^2}=0 \\\\\\ 1=\cfrac{1}{c^2}\implies c^2=1\implies c=\pm\sqrt{1}\implies c=\pm 1](https://tex.z-dn.net/?f=%5Cbf%20f%28x%29%3Dx%2B%5Ccfrac%7B1%7D%7Bx%7D%5Cqquad%20%5Cleft%5B%5Cfrac%7B1%7D%7B2%7D%2C2%20%20%5Cright%5D%5C%5C%5C%5C%0A-----------------------------%5C%5C%5C%5C%0A%5Ccfrac%7Bdf%7D%7Bdx%7D%3D1%2B%5Cleft%28-1x%5E%7B-2%7D%20%20%5Cright%29%5Cimplies%20%5Ccfrac%7Bdf%7D%7Bdx%7D%3D1-%5Ccfrac%7B1%7D%7Bx%5E2%7D%0A%5C%5C%5C%5C%5C%5C%0Af%27%28c%29%3D1-%5Ccfrac%7B1%7D%7Bc%5E2%7D%5Cquad%20%5Cquad%201-%5Ccfrac%7B1%7D%7Bc%5E2%7D%3D%5Ccfrac%7Bf%282%29-f%5Cleft%28%20%5Cfrac%7B1%7D%7B2%7D%20%5Cright%29%7D%7B2-%5Cfrac%7B1%7D%7B2%7D%7D%0A%5C%5C%5C%5C%5C%5C%0A1-%5Ccfrac%7B1%7D%7Bc%5E2%7D%3D%5Ccfrac%7B%5Cfrac%7B5%7D%7B2%7D-%5Cfrac%7B5%7D%7B2%7D%7D%7B%5Cfrac%7B3%7D%7B2%7D%7D%5Cimplies%201-%5Ccfrac%7B1%7D%7Bc%5E2%7D%3D%5Ccfrac%7B0%7D%7B%5Cfrac%7B3%7D%7B2%7D%7D%5Cimplies%201-%5Ccfrac%7B1%7D%7Bc%5E2%7D%3D0%0A%5C%5C%5C%5C%5C%5C%0A1%3D%5Ccfrac%7B1%7D%7Bc%5E2%7D%5Cimplies%20c%5E2%3D1%5Cimplies%20c%3D%5Cpm%5Csqrt%7B1%7D%5Cimplies%20c%3D%5Cpm%201)
there's a quick graph below of the bounds and the tangent at "c"
not happening -2 or 2 will have a tangent parallel to a,b, needless to say -2 is out of the range [a,b] anyway, so the only value is really 1, on the positive 1st quadrant
Answer:
1
Step-by-step explanation:
When you take the log of ...
b = b^1
you get ...

Answer:
The answer is 8 rows.
Step-by-step explanation:
It is given that each row contain only 5 circles and there are 40 circles in the array. In order to find the numbers of row, you have to divide the total of circle by the number of circle in each row :
total = 40 circle
each row = 5 circle
5 circles = 1 row
40 circles = x row
x = 40/5
= 8 rows
Answer:
FA Is the closest so thats your answer.
Step-by-step explanation:
Answer: There is no quetion this is not helpful i can't help if i don't no the problem
Step-by-step explanation: