Woon Kiat's answer to A math god's Secondary 3 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Woon Kiat
Woon Kiat's answer
322 answers (Tutor Details)
You may continue from here. The negative value is rejected since negative value cannot be log. Hope this helps.