Equating Coefficients in Identities. | Revision Server | Page 1

midnight beacon Dec 7, 2022, 7:24 AM

#

Why does p = 7?
Surely p could be anything and it would still satisfy the identity?

dense lotus Dec 7, 2022, 7:25 AM

#

Do u understand q=6

woeful hollow Dec 7, 2022, 7:25 AM

#

Where did you get that it’ll satisfy it for all p from

echo eagle Dec 7, 2022, 7:26 AM

#

it’s probs subsitution

#

sub the value of q into the expanded equation

dense lotus Dec 7, 2022, 7:26 AM

#

P and q are constants aren’t they?

dense lotus Dec 7, 2022, 7:26 AM

#

echo eagle sub the value of q into the expanded equation

Ye

midnight beacon Dec 7, 2022, 7:27 AM

#

dense lotus Do u understand q=6

yh

#

12x - 12p + 54x + 12p = 66x
66x + 12p - 12p = 66x
12p - 12p = 0

#

oh

dense lotus Dec 7, 2022, 7:33 AM

#

Wait I’ve confused myself now

#

Doesn’t dfm give u a vid explaining it

midnight beacon Dec 7, 2022, 7:34 AM

#

when u expnd u get

dense lotus Dec 7, 2022, 7:34 AM

#

Ye

midnight beacon Dec 7, 2022, 7:34 AM

#

dense lotus Doesn’t dfm give u a vid explaining it

nah it didnt let me click on one

dense lotus Dec 7, 2022, 7:34 AM

#

Oh

woeful hollow Dec 7, 2022, 7:42 AM

#

midnight beacon when u expnd u get

Yh then you compare coefficients

midnight beacon Dec 7, 2022, 7:42 AM

#

woeful hollow Where did you get that it’ll satisfy it for all p from

-12p + 12p = 0 for any values of p no?

woeful hollow Dec 7, 2022, 7:42 AM

#

The coefficient of x on the rhs has to be the same as the coefficient of x on the lhs

midnight beacon Dec 7, 2022, 7:43 AM

#

yh

#

so 11qx = 66x

#

q = 6

woeful hollow Dec 7, 2022, 7:43 AM

#

Yes

midnight beacon Dec 7, 2022, 7:43 AM

#

but the ps just cancel out and dont get a value

woeful hollow Dec 7, 2022, 7:44 AM

#

Yh I get what you mean

#

Yeah I think all values would work

#Equating Coefficients in Identities.