Invited by Sean Chua, SimpleChemConcepts.com
Early bird registration saves you $200! Learn everything on Acid, Bases, Salts & Qualitative Analysis in 18 hours.
Exam Question : Usage of Binomial Formula
Harry - a vivd reader of askalwayslovely.blogspot.com sent me an email asking about solving of the following question. He did it using trial and error. I believe it will take him some time. He felt that his approach was not the best so he emailed me asking for alternatives.
In fact for this question, there is a step by step way which will get us the answer in less than 8 minutes time.
Question: If the coefficient of [pmath]x^k[/pmath] and [pmath]x^(k+1)[/pmath] in the expansion of [pmath](2x+3)^19[/pmath] are equal, find [pmath]k[/pmath]
Click on the image for bigger view
What You Need To Know To Do Well In Plane Geometry - Part 1
Plane Geometry is the new topic added in the new syllabus. There are hardly any calculations but lots of proving to be done.
We know students dislike proving, be it in Plane Geometry, Trigonometry, Quadratic Equations, Differentiation . . .
To score As in your exam, you must be good in proving.
Plane Geometry has proven to be a challenging topic for many students due to the nature of the diagrams, questions. Many a times, students do not know when to begin, not to mention which theorems to apply. I am going to share with you in this post on the key concepts you need to know at your fingertips for Plane Geometry.
There are 2 basic shapes in Plane Geometry: Triangle & Circle
In Triangle,
- You must know the different Congruency Tests & Similarity Tests. These are extremely important in proving plane geometry questions. Teachers did not emphasize on this as students are expected to know these concepts well from E-Math. But I realize many many students did not like Congruency & Similarity as it involves proving (which is a very systematic approach of thinking) and hence many did not understand these 2 concepts well.
- Mid point theorem (This is not exactly your mid point formulae in Co-ordinate Geometry)
- Intercept theorem
D and E are the midpoints of AC and AB respectively.
When DE//CB, AD/DC = AE/EB
I will be adding on specific properties for circle in my next post. If you like to be updated, subscribe to my feed by clicking HERE
O Level Chemistry - Mole Calculations Mastery Workshop
For all Chemistry Students, Early Bird Registration Invitation to learn and apply all strategies on #1 Killer Chemistry Topic - Mole Calculations.
Score the marks you truly deserve!
Save $100 when you register before 14 Aug 08
Organic Chemistry Mastery Workshop by SimpleChemConcepts.com
To: All O Level Students in Singapore
Hair-tearing sessions? Hours and hours of studying but still do not what is going on for Organic Chemistry?
If you are taking Pure Chemistry or Combine Science, read on to see how you can mastery EVERY thing you need to know in this Organic Chemistry Mastery Workshop
As a gift to my readers of singaporeolevelmaths.com, Sean, founder of SimpleChemConcepts.com would like to first invite you to join him at this workshop before it is officially launched it to the public.
The best part is, if you hurry, you can enjoy the special “subscriber” early bird price. (But hurry because the normal price will resume once we launch to public)
More Details here
Happy Youth Day!
Happy Youth Day!
Enjoy your youth to the fullest, afterall we are youth once while.
Cheers,
alwaysLovely :)