Question

please check my work for these 1st derivative problems (:

medal to the best answers!

Answer 1

yep those are right

Answer 2

no those aren't because I submitted them and a few sections came back wrong. for example for the 2x+7/x problem parts 3 and 4 are incorrect

Answer 3

ok 1 min plz

Answer 4

it is not 7/2 it is sqrt(14)/2

Answer 5

ok better hurry pvt might beat you to it and my nipples are getting harder every second

Answer 6

Were you able to figure these problems out ok? :)

Answer 7

no :/

Answer 8

Does it tell you which parts you got wrong by chance? :U

Answer 9

well im limited on the number of attempts but i know for 2x+7/x problem parts 3 and 4 are incorrect

Answer 10

so 69% of it is right ;)

Answer 11

lol -_-

Answer 12

for problem 5. 83% is right

Answer 13

https://www.desmos.com/calculator/6jdvw8q2pm
Look at the graph a sec.
It might help you easily see where the function is increasing/decreasing.

Answer 14

Where is the line `going up`?
Just about everywhere except in the middle, right?

Answer 15

right but 0,inf and -inf,0 don't work

Answer 16

Mmmmm I'm not sure what you mean.
It's increasing everywhere except in that tiny interval in the middle.

It's increasing from (-inf, -sqrt(7,2))U(sqrt(7/2), inf)

Does that make sense? :u

Answer 17

By increasing I mean, f'(x) > 0

Answer 18

yeah thanks for clarifying

Answer 19

for part 4 is the decreasing function (0,4)? @zepdrix

Answer 20

Mmmm yah that seems right! :)

Answer 21

the interval includes two functions so im a bit unsure but it seems to make sense

Answer 22

cool beans

Answer 23

Oh oh there is an asymptote in there.. yahhh
We might have to write it a little differently. my bad

Answer 24

Where is the asymptote? x=2?

Answer 25

(0,2)U(2,4)
Something like that is needed I guess.

Answer 26

that's correct, err its so easy to mess these problems up. I will persevere!

Answer 27

Hehe good! :)