Feedback for AMWA2 2023 by Karolyn Gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu en-us 2023-05-17 03:37:46 UTC 2023-05-19 05:01:56 UTC hello@padlet.com https://padlet.net/icons/png/1f430.png Ambiguous: Is it product of neg sin x with the exponential function or sin of the product of x and the exponential function? Use brackets to make it clear. karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089906 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089906 For show qn, steps must be explicitly written out as final answer is already given. Awarded 1 out of 2 only when “2” is not explained karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089907 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089907 Learn to simplify the expression entirely using Power and Quotient law, then proceed to differentiate. This is too tedious already. Keep your handwriting neat so that you will not confuse yourself. karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089909 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089909 Brackets are important karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089910 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089910 Brackets are important! karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089911 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089911 Insert in missing answer statement (must have correct units) karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089912 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089912 When using fraction notation, numerator and denominator should only consist of integers. Giving 0.2 in numerator as a final answer is not acceptable. karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089913 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089913 Discouraged to work using dx/dy. Learn to express as (dy/dt)=(dy/dx)*(dx/dt) karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089916 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089916 Must include to the condition: "FOR ALL VALUES OF X" in the explanation. Can put it right at the start in the heading of the explanation. Must also explain that x^2>=0 and hence x^2+5>0 karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089921 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089921 Brackets are important! it means a different thing without karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089922 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089922 STRONGLY DISCOURAGDED to use cases to solve inequality. SIMPLEST MTD: factorise and sketch the curve karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089929 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089929 Such slips occurs because students do not know how to do factorisation properly. STOP using your calculators! karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089930 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089930 How did an inequality become an equation? this is not acceptable karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089935 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089935 After solving questions, always consider the validity of your answers against the context of the question karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089942 2023-05-17 03:37:46 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594089942 NOTE: some students thought that e^(3-x)>=0. This is wrong. Eg: e^(-1)=1/(e^1), hence it is always positive karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594095675 2023-05-17 03:43:36 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594095675 karolyn_gan https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594627744 2023-05-17 12:10:41 UTC https://padlet.com/karolyn_gan/erknf3o1c3zzacbu/wish/2594627744