5*25^{1/x} +3*10^{1/x} \geq 2* 4^{1/x} [/tex]

Question

5*25^{1/x} +3*10^{1/x} \geq 2* 4^{1/x} [/tex]

Comments

2 не понятно

Answer 1

2^2x+3*3^x*2^x-4*3^2x<0/3^2x<br>(2/3)^2x+3*(2/3)^x-4<0<br>(2/3)^x=a
a²+3a-4<0<br>a1+a2=-3 U a1*a2=-4⇒a1=-4 U a2=1
-4x>0
x∈(0;∞)