main algebraic solution


label Mathematics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

May 28th, 2015

You use the same principle

f'(x)=2ax+b

f'(-1)=0 <=>-2a+b=0 <=>b=2a

f(x)=ax^2+2ax+c

f(-1)=-4 and f(-4)=-8

a-2a+c=-4 and 16a-8a+c=-8

-a+c=-4 and 8a+c=-8

9a=-4 and -a+c=-4 

a=-4/9 and c=-40/9

f(x)=-4/9x^2-8/9x-40/9

May 28th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
May 28th, 2015
...
May 28th, 2015
Nov 19th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer