Page 5 - 1202 Question Bank Mathematics Form 5

MUST

KNOW Common Mistakes

Combined Transformation Size of Class Interval
Correct Wrong Correct Wrong

The combined transformation The combined transformation If the class interval is If the class interval is
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PQ indicate that performing PQ indicate that performing 6 – 10, the size of the class 6 – 10, then size class interval
the transformation Q first, then the transformation P interval is the upper boundary is 10 – 6 = 4.
followed by transformation P. first, then followed by – the lower boundary, thus
transformation Q. 10.5 – 5.5 = 5

Common Mistakes (Chapter 5) 37 @ Pan Asia Publications Sdn. Bhd. Common Mistakes (Chapter 7) 43 @ Pan Asia Publications Sdn. Bhd.

The value of sin x The correct way to get the value of fx 2

Correct Wrong Correct Wrong
sin x is 0.5. sin x is 0.5. Most students The value of fx is calculate as The value of fx is calculate
2
2
The correct value of x are will only give the value of f multiplied by the value of x . as f x.
2
2
x = 30° and 150°. x = 30°.

Common Mistakes (Chapter 6) 39 @ Pan Asia Publications Sdn. Bhd. Common Mistakes (Chapter 7) 45 @ Pan Asia Publications Sdn. Bhd.

Enlargement and Scale Factor Mathematical Modeling

Correct Wrong Correct Wrong
State the transformation of State the transformation of The mathematical equation The assumption that the
enlargement with scale factor. enlargement without mention which is used to solve mathematical equation which
the scale factor. problem can be changed is used to some problem is
based on the change in the fixed and not influenced by
relationship between the the change in the relationship
relevant variables. between the relevant
variables.

Common Mistakes (Chapter 5) 41 @ Pan Asia Publications Sdn. Bhd. Common Mistakes (Chapter 8) 47 @ Pan Asia Publications Sdn. Bhd.

Must Know 1202BS Maths F5.indd 7 21/01/2022 4:16 PM