Y`=14-14√2cosx
14√2cosx=14
cosx=1/√2
x=+-π/4+2+2πn,n∈z
x=π/4∈[0;π/2]
y(0)=-28-3,5π+0-0≈-38,5
y(π/4)=-28-3,5π+3,5π-14=--42 наим
y(π/2)=-28-3,5π+7π-0≈-17,5
А) хквадрат-6х+5=0
Д=6квадрат-4*1*-5=корень16=4
х1=-6+4/2*1=-1
х2=-6-4/2*1=5
9x^2-16=0
9x^2=16
x^2=16/9
|x|=4/3
x=+4/3
x=-4/3
(√16)³ * (√16)⁶ = (√16)³⁺⁶ = (√16)⁹ = 16 ¹/²*⁹ = 16 ⁹/² = (2⁴)⁹/² = 2 ⁴*⁹/² = 2¹⁸ = 262144