Differential equation by substitution (H2 maths)

Mad Hat SG

Is solving a differential equation by substitution still in the H2 syllabus? Or has it been removed? I mean this type of question:

By substituting y = vx, solve dy/dx = 2xy/(x² + y²).

The last A-levels d.e. question using substitution was in 2007. I don't see d.e. by substitution after 2008. The current syllabus also doesn't mention the method of substitution. So is it still in the syllabus? Or has it been removed?

wee_ws SG

Hi,

It is in. However the content has not been assessed in the H2 Maths exam thus far. The syllabus document is, unfortunately, vague in many ways.

Thanks.

Cheers,
Wen Shih

Mad Hat SG

Okay thanks.