Integration 24 • Differential Equations • P2 Ex11J • 🎲

Edexcel Pure Year 2

Tues 21/1/20

[sameer-qhvh]

great and informative video, thank you

[gordongordon]

Could I please have the memory sheet for the course? Thanks a lot!

[rayzino]

Would u say this is like the integration version of implicit differentiation

[mattyb]

I feel like in an exam I'd think this is a differentiation question (especially the last question you did). Is there any way to understand the difference between the two? Good video by the way.

[fatm]

did you make a january mock for your a level yr 13 class? if it was for edexcel could u upload it for extra practice :)

[samuelbrodie]

Does it matter on which sides any constants are before integrating both sides e.g does the number 2 specifically need to be on one side?

[fezaanmalik]

should c not be cancelled out as when the y side is integrated, a c should also be the result of integration. However I do not know whether it is by mistake or not but you do not to do. This is regarding question 1

[shadowfatemahir]

U wrote ln ( 2(x+2) / 2x+1, is it because of that negative ln (2x+1), u can rewrite it as ln (2x+1) - ln (x+2) in which u can divide. Also, does it matter which one u put at the numerator? Like wld it still be correct if u put ln (2x+1) / x+2? Because sometimes I see that people either put the first expression at the numerator or the second one at the numerator

[nd]

Hi Bicen, If possible could you please upload/share the cheat sheet that you show on your videos! Thank you

[jammydodger]

Hi sir, I have two questions, Please could you help?

1. Say if the question did not specify to leave it in the form "y =f (x)", could we leave it in the form as at 21:24?

2. At 21:24, (when you do e to the power of both sides) how come you are able to remove the mod signs? Is it because mod signs are only necessary when in a log otherwise they can be ignored?

[ez]

how come at 22:20 you changed it to 2x + 1 + 3 (where did the 1 and 3 come from?) thanks

[danielsundaram]

At 6:50 you said your integrating 1/y with respect to y but in step 2 u said integrate both sides with respect to x I’m confused

[shamelahmed]

Hello sir, does "top-heavy" just refer to the x power?

[homeofgaming]

After doing integration can you add and subtract

[samuelbrodie]

Hi Mr Bicen, Is there a reason why you can't subtract/add to collect like terms when separating the variables and does this only apply to differential equations? Thank you

[scottd]

Hi Mr Bicen, once you've integrated, does it matter which side you put the constant on- i.e. is it okay to put the lnk on the side with the y terms instead of the x terms? And when you're finding the value of k (for the particular solution questions) do you have to write the ln terms as fractions/ multiples before substituting in the x and y values to find k? (From question 4 in the textbook). Thanks!