Question

Jika a^ log b - b^log a = -3 ? maka nilai dari ekspresi (a^log b)^2 + (b^log a)^2 =....

Answer 1

a^ log b - b^log a = -3 
 (a^log b)^2 + (b^log a)^2 =(a^ log b - b^log a)^{2}
= (a^log b)^2 + (b^log a)^2-2xa^ log bxb^log a=-3^{2}
 (a^log b)^2 + (b^log a)^2=(2xa^ log bxb^log a)+9