What value will make the equation true? Logx 81= -4 A) x= 1/9
B) x= 1/3
By definition of logarithm, the base of logarithm is a positive real number not equal to 1. The equality logx81=-4 is equivalent to 81=x(-4), that is 1/x4=81, or x4=1/81, x4-1/81=0. Seek a positive x, factor the left-hand side (x2-1/9)(x2+1/9)=0, (x-1/3)(x+1/3)(x2+1/9)=0, x>0. The answer is x=1/3.
I'm extremely satisfied with the assignment that was completed. The satisfaction led me to bring more assignments. For a long time I've been in need of programming experts but it's been so hard to find. Other sites were fake. I'm glad to have found your site by chance. Thank you very much