Help finding how they solved for revenue function | Mathematics | Page 1

unkempt finch Oct 23, 2022, 11:10 PM

#

I want to know how they rearranged the function

pulsar kiln Oct 23, 2022, 11:10 PM

#

They just... solved for p.

unkempt finch Oct 23, 2022, 11:10 PM

#

uhh

#

how..?

#

im sorry

#

im dumb

pulsar kiln Oct 23, 2022, 11:11 PM

#

Okay, we have q = sqrt(15,000 - 1.5p), right?

unkempt finch Oct 23, 2022, 11:11 PM

#

ya

pulsar kiln Oct 23, 2022, 11:11 PM

#

We want p = f(q), right?

unkempt finch Oct 23, 2022, 11:11 PM

#

yes

#

i didnt see that at first but yea

pulsar kiln Oct 23, 2022, 11:11 PM

#

So what's our first step?

unkempt finch Oct 23, 2022, 11:12 PM

#

isolate p?

pulsar kiln Oct 23, 2022, 11:12 PM

#

That's not a step. That's a goal.

unkempt finch Oct 23, 2022, 11:12 PM

#

well rationalize

#

get rid of the sqrt

pulsar kiln Oct 23, 2022, 11:12 PM

#

How would we do that?

unkempt finch Oct 23, 2022, 11:12 PM

#

multiply by conjugate?

pulsar kiln Oct 23, 2022, 11:12 PM

#

What conjugate?

unkempt finch Oct 23, 2022, 11:12 PM

#

uh

#

like by itself

pulsar kiln Oct 23, 2022, 11:13 PM

#

There's no conjugate.

unkempt finch Oct 23, 2022, 11:13 PM

#

im not too god with sqrt

#

right cuz its not a fraction

#

i used the wrong wor

#

d

#

idk what its called

pulsar kiln Oct 23, 2022, 11:13 PM

#

No, because it's not a sum or a difference of rational and irrational terms.

unkempt finch Oct 23, 2022, 11:13 PM

#

so

#

what do i do

#

my brain is drawing a blank

pulsar kiln Oct 23, 2022, 11:14 PM

#

What's the inverse operation of a square root?

unkempt finch Oct 23, 2022, 11:15 PM

#

uhm

#

why cant i remember

#

square it

#

holy shit

#

what is wrong with me

pulsar kiln Oct 23, 2022, 11:15 PM

#

Right, so we square both sides.

unkempt finch Oct 23, 2022, 11:15 PM

#

yes

pulsar kiln Oct 23, 2022, 11:16 PM

#

q^2 = 15,000 - 1.5p

unkempt finch Oct 23, 2022, 11:16 PM

#

yes i have that dowm

#

we subtract 15000?

#

from the right

pulsar kiln Oct 23, 2022, 11:17 PM

#

...from both sides. It's an equation, we have to always do the same thing to both sides or it won't be true anymore.

unkempt finch Oct 23, 2022, 11:17 PM

#

yeah

#

thats what i meant

#

sorry

#

i got it from here

#

i figured it out

#

thanks alot btw

pulsar kiln Oct 23, 2022, 11:17 PM

#

Cool.

unkempt finch Oct 23, 2022, 11:17 PM

#

seriously appreciate it

pulsar kiln Oct 23, 2022, 11:17 PM

#

No problem.

unkempt finch Oct 23, 2022, 11:18 PM

#

do i close the thread or just leave it

pulsar kiln Oct 23, 2022, 11:18 PM

#

You can close it.

unkempt finch Oct 23, 2022, 11:18 PM

#

ok

#

thanks again

#

@pulsar kiln one more thing how did they get the 2/3 from 1.5?

pulsar kiln Oct 23, 2022, 11:22 PM

#

1.5 = 3/2.

unkempt finch Oct 23, 2022, 11:23 PM

#

ok nvm

#

i get that 1.5 = 3/2 i forgot that there was a 1 infront of the q^2

#

1/ 1.5 = 2/3

#Help finding how they solved for revenue function