# Search results

1. ### old cambridge 3u math y11 textbook

I've copies of actual textbooks for sale, cheap. If you can pick up at Epping station, may be worth your while. PM me if interested.
2. ### Do You Value Your Life?

OK. Some of you may be wondering why I put up this seemingly crazy post. Well, you may have read from time to time, young people like most of you, going on a joyride in your friend's car. He has perhaps just got his red P-plate a few months back. There are 3 or 4 of you joining the ride. Maybe...
3. ### Do You Value Your Life?

Many young people, aged between 15 - 18, have lost their lives needlessly, causing untold grief to their family, loved ones and friends.
4. ### Has anyone tried superprof tutoring

For what subject?
5. ### What languages do you speak fluently?

Let me teach you Hokkien.
6. ### What languages do you speak fluently?

You can speak Teochew with me. My own tongue is Hokkian (usually less accurately transliterated as Hokkien).
7. ### am i cursed cus my school uses maths in focus

Nothing to stop you from getting your own copies of the Cambridge of Fitzpatrick textbooks; and go thru them yourself.
8. ### pulley question

Remember: friction is not a fixed force. I call it an "annoying force" in that if an object is trying to move up the incline, friction acts down the incline to oppose your motion. If the object is sliding down the plane, then the friction will act in the opposite direction, up the incline. And...
9. ### If you live near Epping, I'd be delighted to provide you face-to-face 1-on-1 tutoring in 4U...

If you live near Epping, I'd be delighted to provide you face-to-face 1-on-1 tutoring in 4U Maths. Message me first if interested.
10. ### Easy Integral Question

I "invented" this method (let's for now call it the "Drongoski Method"). A 2-hour lesson would be sufficient for an introduction to my method. So far, I've attracted no interest. I think they don't know what my approach is all about. But I believe it to be a very powerful, intuitive and very...
11. ### inequality problem

Ok. Posted it especially for your benefit, since you indicated multiple times you could not follow my explanation.
12. ### inequality problem

But is this version of any help. Do you now understand my solution?
13. ### inequality problem

A picture is worth a thousand words.
14. ### Easy Integral Question

Hello again, clarifying my approach to integration..
15. ### Easy Integral Question

Hello Hello Hello.
16. ### cooked integration

Wish I was half as smart as you at your age. Good on you.
17. ### cooked integration

Are you in Year 9 only?
18. ### cooked integration

\int \frac {ln ([3x^5 + 3]^{5x^4})}{x^5 + 1}dx \\ \\ = \int \frac {5x^4[ln(x^5 + 1) + ln 3]}{x^5 + 1}dx \\ \\ = \int ln(x^5 + 1)\cdot \frac {5x^4}{x^5 + 1} dx + ln 3\int \frac {5x^4}{x^5 + 1} dx \\ \\ = \int ln(x^5 + 1)dln(x^5 + 1) + ln3\int \frac {1}{x^5 + 1}d(x^5 + 1) \\ \\ = \frac...
19. ### inequality problem

OK. Say you take x = 5.7 say. Then this number is |5.7 + 1| = 1 + 5.7 = 6.7 away from the number -1, and |5.7 -5| = 0.7 away from the number 5; so it is = the constant 6 plus 2 x 0.7 from the 2 numbers. Remember, any x outside the closed interval [-1,5] is 6 + twice its distance from the nearer...
20. ### inequality problem

Say you choose any x between -1 and 5, x = 2, say. then |x+1| + |x-5| = |2+1| + |2 - 5| = 6. Choose another such number, say x = -0.7; then |x+1| + |x-5| = |-0.7 + 1| + |-0.7 -5| =0.3 + 5.7 = 6 (again). If you choose x = -3 (which is more than 0.5 to the left of -1), then |-3+1| + |-3-5| = 2 + 8...