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# Integration of cos^3 x

There are many methods to integrate $\sin^3 x$.

## 1. Use trigonometric identity

Given that  $\sin (3x)=3\sin x - 4 \sin^3 x$, $\sin^3 x = \frac{1}{4} [3\sin x - \sin (3x)]$

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## STPM 2021 Term 2 Exam Timetable

View the exam timetable for STPM 2021 Term 2. Countdown to STPM 2021 Examination. Join my tuition to help you achieve better results in the exam. Contact (60) 018-2016992 or kklee@kkleemaths.com for more information.

## STPM 2018 Term 3 Mathematics (T) Coursework Sample Answer

STPM 2018 term 3 mathematics (T) Coursework sample Guideline for solving STPM 2018 Term 3 Mathematics (T) PBS coursework assignment methodology   Hint: Binomial Theorem   Chi-Squared tests   tabulate Thanks for helping in doing the survey. You can find...

## STPM 2018 Term 2 Mathematics (T) Coursework Sample Solution

STPM 2018 term 2 mathematics (T) Coursework sample Guideline for solving STPM 2018 Term 2 Mathematics (T) PBS coursework assignment methodology Hint: limits L' Hopital rule Rationalisation Indeterminate Form Existance of limitsThanks the two students who sent me the...

## Integration Booklet Page 10 Page 11 Solution

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## STPM 2018 Term 1 Mathematics (T) Coursework Sample

Question A complex number is an extension of a real number and it can be represented in Cartesian and polar forms. In this assignment, you are required to explore the powers and roots of complex numbers. 1 (a) Let z =1+i. Find z^n, where n = 2, 3, 4, …, and represent...

## STPM 2017 Term 3 Mathematics (M) Coursework Sample Answer

Question An entrepreneur is contemplating to purchase a brand new sealing machine winch costs RM90 000. The machine can be purchased through financing packages provided by 3 suppliers. All suppliers require 30% down payment. 1. Suppliers A, B and C offer a financing...

#### KK LEE

KK LEE has been a STPM Mathematics tuition teacher since June 2006, but his love of Maths dates back to at least 1999 when he was Form 4. KK LEE started teaching in 2006 at Pusat Tuisyen Kasturi. He was known as "LK" when he was teaching in PTK. After teaching STPM Mathematics for 8 years in PTK, he joined Ai Tuition Centre in 2014. Over the years he has taught Mathematics (T), Mathematics (S), Mathematics (M), Additional Mathematics.

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## Mathematics (T) Exam Practice Week 1

Exam practice week 1. Mathematics (T) term 3 and Mathematics (T) term 1. Only one question for this week.

## Geometric Progression I

Geometric Progression I

## Polynomial Question from student I

Solve the equation $r^6-4.2r^4+3.2=0$.