Question

Решите неравенства:
а) $( \frac{1}{3} )^{x} \geq 27$
б) $( \sqrt{6} ^{x} ) \leq \frac{1}{36}$
в) $0.2 ^{x} \leq \frac{1}{25}$
г) $(1.5) ^{x} \ \textless \ 2.25$

Answer 1

а) (1/3)^x <= (1/3)^-3 
x<= -3
б) 6^(x/2)<= 6^-2
x/2 <= -2
x<= -4
в) (1/5)^x >= (1/5)^2
x >= 2
г) (1,5)^x < (1,5)^2
x < 2