[ARWA ~]

الآجـآبـة في HM17






F’(x)=4/5x-1/5(x-3)+x4/5
= 4/5x4/5-12/5x-1/5+x4/5
= 9/5x4/5-12/5x-1/5
Take 1/5x-1/5 as a common factor yields:
= 1/5x-1/5(9x-12)
F’(x) = 0
1/5x-1/5(9x-12) = 0
9x-12=0
9x=12
X=12/9



طلــعــت خطــأ ..

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