Ask Singapore Homework?

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



Question

junior college 1 | H1 Maths
6 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Chowder
Chowder

junior college 1 chevron_right H1 Maths

Help pls how to do Q 3 d e h i j so complicated i apply the rule i still cant get the ans pls help

Date Posted: 6 years ago
Views: 914

See 6 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
1st
Analyze them slowly..
Chowder
Chowder
6 years ago
Tutor i cant really see what u wrote in red and some of the workings :( if ure free can u take the pic again ? Also i have a lot of Q to ask abt differentiation cos i think im still abit blur about it. Is that ok? Pls help me please
Chowder
Chowder
6 years ago
Is it okay for you bcos i still have some Q that i need to clarify. Can i ask u?
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
...
Chowder
Chowder
6 years ago
For e right? Where did the ln go?
Tham KY
Tham KY
6 years ago
Differentiate ln(x) gives 1/x, no more ln...
Tham KY
Tham KY
6 years ago
Differentiate any ln, everything within the ln goes to denominator, no more ln...
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
...
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
...
Chowder
Chowder
6 years ago
If they give us like this . We must put the e.g 6x differentiate then we must put xln6=any letter we ln it?
Tham KY
Tham KY
6 years ago
My purpose is to make the given function into either ln() or e^(), coz only these two functions can be differentiated.
Chowder
Chowder
6 years ago
But if they give it like that can i use that as a formula? The thing ure using e /ln and exactly following ur steps if thwy give 6x or 100x
Tham KY
Tham KY
6 years ago
It is not a formula, it is a method. You learned indices and logarithms in sec level, just make use of them.
Chowder
Chowder
6 years ago
But is there a diff way for me to do other than putting ........=k ?
Chowder
Chowder
6 years ago
I mean is there anyway to do it other than equalling the ln to k
Tham KY
Tham KY
6 years ago
k is just a temporary variable, a transition term only. I wanted to make it into an equation, so that you have LHS and RHS, so that I can rearrange. If only 10^x, which we call it an expression, I can introduce anything to balance it!
You can see eventually, I made k in terms of x too!
Tham KY
Tham KY
6 years ago
Some people who are good in indices and logarithms, they can straight away equate 10^x = e^(x ln 10) !!
The whole objective is to change the given expression into either ln or e^(), coz only these two can be differentiated, no other base or log...
Chowder
Chowder
6 years ago
Okay thank you! But this saturday i have parts that i dont understand from ur working. If ure free this sat can u help me explain those ? Please ?
Tham KY
Tham KY
6 years ago
I am quite loaded with tuition on Sat,maybe only free after 8pm++. Will try to log in here to help you. You may post your questions first.
But now the problem is, this apps is giving me Notifications problem, I can't read your comment, I need to trace back my History one by one to find your new comments, it is a long list!
Do you want to consider tuition with me at my home? It is cheaper than ever
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
...
Chowder
Chowder
6 years ago
Im abit confused . If its a trigo fraction the fraction means minus? Bxos like the other Q when its a normal x funct we dont subtract it? Is it only apply to trigo funct?
Tham KY
Tham KY
6 years ago
Nothing to do with trigo, it is because of the ln, property of logarithms : ln (x/y) = ln x - ln y.
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
...
Chowder
Chowder
6 years ago
I still have some doubts that i need to clarify . U will help me right? Please ?
Tham KY
Tham KY
6 years ago
Provided that we are HERE at the same time... Do you mind we chat via whatsapp? Where do you stay?
Chowder
Chowder
6 years ago
Omg really? Ure going to help me ?? are u free tomoro ? I will ask here if thats easier for you
Tham KY
Tham KY
6 years ago
I am free till 6pm on Thu. I log in here almost everyday, see if I can help anyone. If you are urgent and no one helps you, you may whatsapp me. I will help you if I am free.
Tham KY
Tham KY
6 years ago
I may not be able to answer your newly posted questions if already answered by others... You need me, you need to post comments under my answers so that it shows up under Notification.
bugmenot
Bugmenot
6 years ago
@Tham
you should probs delete that comment with your hp no. after he contacts you