Question

Picture attached of homework problem. Something with temperature equilibrium.

Answer 1

Have no idea how to approach this problem

Answer 2

which one

Answer 3

Its only one problem.... I attached a screenshot. ^^

Answer 4

well take the derivative and sub in that value for k and solve

Answer 5

Uh.... The derivative of what?

Answer 6

the only function they gave u lol

Answer 7

they said heatflux = -kT'(x)
so you need T'(x) first of all

Answer 8

Well i dont know how to take the derv of it. Do i have to use the chain rule?

Answer 9

expand it

Answer 10

u cud use product rule but that just silly here

Answer 11

Okay so i get -120x+360

Answer 12

okay so this is yout T'(x)
now they say k=3

Answer 13

Oh i see got it now.

Answer 14

so your healflux = -3(-120x+360)

Answer 15

yep now just evalute for x=1 and 5

Answer 16

I got part a now. What about b and c?

Answer 17

I guess i just gotta plug in values fir b

Answer 18

well not plug.. but solve

Answer 19

How is that not plugging in?

Answer 20

i dunno why wud u plug in points...

Answer 21

plug in x = 1,2,3,4,5,6 obiously not all but just to figure out if positive or negative.

Answer 22

wutt the!! NOOO dude

Answer 23

How else would you do it?

Answer 24

this is not how you do math lol

Answer 25

Dude idk i suck at this.

Answer 26

Trying to be a computer engineer, math will be the death of me.

Answer 27

ok ok listen!! ill tell you this stuff is really simple, u just gotta think a little

Answer 28

basically this is your equation right now
healflux = -3(-120x+360)

Answer 29

this is a linear equation
mean at some value it will pass the x, axis

Answer 30

let me simplify this maybe ull see what i mean

Answer 31

healflux = -3(-120x+360)
=360x-(360*3)

Answer 32

think bout this line