Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 3 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
help
Help

secondary 3 chevron_right A Maths chevron_right Singapore

why must i reject 1 and which 1 should i reject im so confused ahhhh

Date Posted: 2 years ago
Views: 209
Lee
Lee
2 years ago
Should be reject 7. Bec of ur first line.
Log(3-x)/log2

Log(3-7) = log (-4) is undefined
help
Help
2 years ago
SORRY I MEANT THANK YOU I WAS SO CONFUSED JN**
Lee
Lee
2 years ago
I didn’t read ur first post. Hope u understand now
help
Help
2 years ago
YES THANK YOU
PhysChemTutor
PhysChemTutor
2 years ago
if you had simplified 2 log9(3) = log9(9) = 1
and left it at the rhs, the steps are shorter

See 1 Answer

The is because if u sub back 7 into the log function above, the no. inside is a -ve. Log with a negative is an error. Try it on your calculator:)
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Ismail Putra
Ismail Putra's answer
14 answers (Tutor Details)
1st