Complex Numbers (Year 2) 14 • Geometric Problems - centre NOT at origin & Exam Q • CP2 Ex1G • 🎯

Edexcel Core Pure Year 2

Thurs 8/10/20

[saferehman]

Feels like you're only helping me cuz you have like no likes or comments... But you're helping me so much so thanks

[CyberOssian]

You are single handedly saving my A Levels when no one else could, thank you!

[kausarlolz]

thank you so much for this video sir! i watched this before my core pure 2 exam today and a question like this came up! i would have never known how to answer it if it wasn't for this video. thank u!

[idkidk]

Hi for a question like An equilateral triangle OAB where O is the origin and A is root3 (1-i) and B is another complex number. What is the 2 possible coordinates of B. How would u approach this question because even though O is not the origin of the triangle, you are not given a centre. The mark scheme adds pi/3 to the arguements instead of 2pi/3. Thanks 👍

[ricy]

Thanks so much A level grade are starting to turn around!

[akihayakawa]

youre a lifesaver omg i mananged to finish teaching myself all of CP2 thanks to your videos while my class still has hyperbolics and methods in calculus left to finish off, so i have so much more time to revise everything and properly go through past papers. thank you so so much!!!

[kndy_]

For question 3 of exercise 1G, the solutionbank says to instead make omega = pi/3 (as 180 degrees/3 for each angle). As you aren't given the centre you can't do this method, and as it's centre isn't at the origin you can't add on omega (i.e...2pi/3).

Is this also a valid method, then, adding on ((n-2) *180)/n in radians when it's not at the centre?

[rrsytxfdhjgswajertewrterwq]

brilliant stuff man finally understood this part after 2 years!

[sam-wdnw]

would the length of the points D, E or F be the same as those of the points A, B or C. Because on question 4b on 1G, I thought the modulus of the points in the midpoint would be different, but the solution bank says it's the same?

[nevzys]

do we have to put it at the origin to use root of unity technique because roots of unity are always at origin?

[BohdanBarabash]

Hi, is it possible to do first question from this video using a rotation matrix? Because when I multiply my rotation matrix by coordinate (3, 4), I think it's taking me to the left of the original coordinate whereas I need to go to the right in order to find other vertices. Thank you

[abduramen]

You are genuinely a legend! A full on savior! You went through this topic so well. Thank you !!

[TheSafeSword]

Holy crap, well thats all of Complex Numbers done. and i got the polar coords finished off too. Thank you as always for these videos. I guess i gotta revise taylor series and t formula on my own. Thanks again