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alsav241357
@alsav241357
August 2021
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ПРОШУ ОЧЕНЬ СРОЧНО ПОМОГИТЕ С А13 и А14 ДАМ 40 БАЛЛОВ
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m11m
Verified answer
!!!!!!!!!!!!!!!!!!!!!!!!!
1 votes
Thanks 1
sedinalana
13
(3^x*6^x-3^x)-6*6^x-6)=0
3^x*(6^x-1)-6(6^x-1)=0
(6^x-1)(3^x-6)=0
6^x-1=0⇒6^x=1⇒x=0
3^x-6=0⇒36x=6⇒x=log(3)6
0+log(3)6=log(3)6
3^log(3)6=6
Ответ 6
14
ОДЗ x-2>0⇒x>2⇒x∈(2;∞)
y`=12/(x-2)-2x-6=(12-2x²-6x+4x+12)/(x-2)=-2(x²+x-12)/(x-2)=0
-2(x²+x-12)=0
x1+x2=0 U x1*x2=-12
x1=-4 ∉ОДЗU x2=3
+ _
(2)------------(3)----------------
max
Ответ 3
0 votes
Thanks 1
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Answers & Comments
Verified answer
!!!!!!!!!!!!!!!!!!!!!!!!!(3^x*6^x-3^x)-6*6^x-6)=0
3^x*(6^x-1)-6(6^x-1)=0
(6^x-1)(3^x-6)=0
6^x-1=0⇒6^x=1⇒x=0
3^x-6=0⇒36x=6⇒x=log(3)6
0+log(3)6=log(3)6
3^log(3)6=6
Ответ 6
14
ОДЗ x-2>0⇒x>2⇒x∈(2;∞)
y`=12/(x-2)-2x-6=(12-2x²-6x+4x+12)/(x-2)=-2(x²+x-12)/(x-2)=0
-2(x²+x-12)=0
x1+x2=0 U x1*x2=-12
x1=-4 ∉ОДЗU x2=3
+ _
(2)------------(3)----------------
max
Ответ 3