跪求y=a*x^2b*xc0(BCCAAB)/20f(x)=2^x∴ab≥2√ab1/(ab)≤1/2√ab.y=a^(2x-2),(a>0≠1)

Question

跪求y=a*x^2 b*x c0 (BC CA AB)/2
0f(x)=2^x∴a b≥2√ab 1/(a b)≤1/2√ab. y=a^(2x-2),(a>0≠1)

Answer 1

f（x）=2-（x分之3）对比∠DAB=60°,AD=AA1对比x(x-4)(x