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secondary 4 | A Maths
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Anonymous
Anonymous

secondary 4 chevron_right A Maths chevron_right Singapore

need help with these 2 qns

Date Posted: 2 years ago
Views: 246

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Arnold K H Tan
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Author of several O-level Science guide books (my profile pic). My forte is tutoring O-level sciences (Chemistry, Physics, Biology). Telegram Messenger: @ChillXsg note that only my tuition students have the privelege to direct message questions, to clarify.
Anonymous
Anonymous
2 years ago
for part a what happens to the +4 when u differentiate it?
Arnold K H Tan
Arnold K H Tan
2 years ago
Coefficients disappear when you diffrententiate them
Anonymous
Anonymous
2 years ago
ohh ok thanks
Eric Nicholas K
Eric Nicholas K
2 years ago
Actually a constant term rather than a coefficient, since the +4 does not come with any x attached.

To the OP, when a constant term gets differentiated, it becomes zero and effectively vanishes. The power of x in a constant term is counted as zero (here’s it’s 4 multiplied by x^0). When we differentiate, the “0” is moved down from the power, and this “0” will cause the entire expression 0 multiplied by 4 multiplied by x^(-1) to become zero.