Y=0
4x²=0
x=0 ________________________________________
1. y'=3cosx-3x^5
2. x≠0 x≠0
100-x^2>=0 x^2<=100 [-10;10]
ответ х [-10;0) U (0;10]
3. (2^8)^(1/7)/4*2^(1/7)=2*2^(1/7)/(4*2^(1/7))=1/2
12-8у-42= 6+4y
12y=-36
У=-36:12
У=-3
А) у=20/(-15)=-1и1/3
Б) 25=20/Х
Х=20/25=4/5
В)-10=20/m
M=-10/20=-1/2
=a²+2a-6a-12-a²+7a-5a+35=-2a+23=-2·(-6.5)+23=36