Question

Check the differentiability of the function f(x)=x^2*{|cos(pi/x)|} at x=2

Answer 1

First\[|x|=\sqrt{x^2}\]
\[f(x)=x^2{|\cos(\frac{\pi}{x})|}=(x \sqrt{\cos(\frac{\pi}{x})} )^2 \]

Answer 2

well. I was trying use the formula F'(x)= lim h--->{2f(x+2) -f(h)}/h, but I messed up!
would you help me doing that?

Answer 3

\[f'(x)=\lim(h \rightarrow 0)(\frac{f(x+h)-f(x)}{h})\]

Answer 4

yeah

Answer 5

This function is not differentiable at x=2. The right hand derivative is not equal to the left hand derivative.

Answer 6

If x < 2 and close to 2
\[
\cos(\pi/x) <0
\]
If x > 2 and close to 2
\[
\cos(\pi/x) >0
\]

Answer 7

The derivative a left of 2 is
\[
u(x)=-\pi \sin \left(\frac{\pi
}{x}\right)-2 x \cos
\left(\frac{\pi }{x}\right)\\
v(2)=-\pi
\]
The derivative a right of 2 is
\[
v(x)=\pi \sin \left(\frac{\pi
}{x}\right)+2 x \cos
\left(\frac{\pi }{x}\right)\\
u(2)=\pi
\]

Answer 8

Regular hexagon FGHIJK shares a common center with square ABCD on a coordinate plane.

Answer 9

kevin has $26 wants to rent bicycle.The bicycle rents for $6.25per hour. How many hours can kevin ride without owing more money than he has.

Answer 10

kevin has $26 wants to rent bicycle.The bicycle rents for $6.25per hour. How many hours can kevin ride without owing more money than he has.

Answer 11

Select the word or words that mean the same or nearly the same as the underlined word(s).

Answer 12

help me please

Answer 13

https://youtu.be/HlKRqmAMM3Y?t=172
https://www.garrettsbridges.com/photos/science

Answer 14

If line d intersects plane F, then how many points on line d also lie on plane F?

Answer 15

Hilbertu2019s axiomu2019s changed Euclidu2019s geometry by _____.

disproving Euc

Answer 16

Check my math please

Answer 17

Given: AZ = 3cm, ZC = 2cm, MC = 5cm, BM = 3cm. Find a) XY

http://prntscr.com/luq

Answer 18

Give

Answer 19

anyone got any song/band suggestions for me to listen to ????
i like Black Veil B

Answer 20

In the first paragraph, why does the author write that Buddhism has u201cserenity

Answer 21

arrange these DNA milestones in chronological order by putting a number from 1 (the earliest) to 11 (the most recent) next to each milestone.

Answer 22

arrange these DNA milestones in chronological order by putting a number from 1 (the earliest) to 11 (the most recent) next to each milestone.

Answer 23

Christov and Mateus gave out candy to children on Halloween. They each gave out candy at a constant rate, and they both gave away all of their candy.

Answer 24

math help, screenshot in comments

Answer 25

Given: segment AX is congruent to segment TX, angle A is congruent to angle T
Pr

Answer 26

math help, pics in comments

Answer 27

math help, screen shot in comments.
please tag me to notify me