6-х-1/2=3-х/2+х-2/3
12/2-х-1/2=9/3-х/2+х-2/3
11/2-х=7/3-х/2+х
х-х/2+х=11/2-7/3
2х-х/2=33/6-14/6
2х-х/2=19/6
(4х-х)/=19/6
3х=19/6:2
3х=19/6*1/2
3х=19/12
х=19/12:3
х=19/12*1/3
х=19/6
х=3 1/6
Решение
1) f(x)= 1 / |x| f(-2)=?
f`(x) = - 1/x² ; f(-2) = 1/2
2) f(x)=(x+4)^2 / (x-3)
f`(x) = [2*(x+4)*(x - 3) - (x+4)²]/x²
<span>3) f(x)=(x^2-2)/( x^2 + 2) f'(2)=?
</span>f`(x) = [2x*(x²+2) - 2x*(x² - 2]/x⁴ = 8x / x⁴ = 8/x³
f`(2) = 8 / 2³ = 1
Крч. 6xc+8c-c^2-8c-16= -(c^2-6xc+16)= -(15-6
x+16=31-6
x