Complex Numbers - Loci : Half-lines : ExamSolutions Maths Video Tutorials

Tutorial on loci and half-lines when dealing with complex numbers

[inhopeofabettername]

This was so much easier to follow than my lecturer. Thank you sir

[memyself]

Omg my teacher used your video to give us notes. This is exactly what I have in my exercise book

[whitedeviltechvijay]

Thx sir and can you explain demorgan's law also

[ArtKickers]

At 9:13 how d'you get to using tan?

[hoptheloop]

why did you you put the imaginary over the real rather than the real over imaginary at 9:25

[mrpeterkempner]

Super video. The only one I could find that explained how this hangs together rather than just how to do questions. Thank you for providing such an accessible and reliable resource

[a_dang]

At 9:25 Im confused on how the tan of the obtuse angle equals opp over adjacent

[Crazyfingers]

i had a doubt, but you cleared it in this video. I can't thank you enough.

[ramsay]

9:45 i get that you using tan, but are you not applying it wrong here? Isn’t arg(z) = -pi + tan(1/4pi) ? Since the angle tan is the one which is inside the triangle and ≠ theta ? And therefore the modulus is completely skewed now as it is not = tan(-3pi/4 )

[marquez]

I don't understand the tan part and I thought it could only be used for right angled triangles.

[pyschoticwaif]

Great video 👍🏾👍🏾 just wanted to ask if you have arg(w+z) and arg (w) and you had to draw the length z on an Argand diagram could you write arg(w+z-w) according to that formula and get arg(z) therefore making z the half line 👍🏾👍🏾 thank you

[tlhe_ovIyloS]

Subscribed, explained much better than my teacher

[eliseratcliffe]

This is wonderful thank you :) I was just wondering why x < 3 and not x<= 3 as it looks like the line starts at (3, -2) so x at the start does have the value of 3? Am I misunderstanding something? Thank you :D

[jessecruz]

4:02 why is the line on that direction? 3/4Pi =5/4 Pi?

[jessecruz]

how come u didn't use the distance formula to find the cartesian equation? cuz you're not equating it to another complex no? cuz I did the cartesian equation like in your perpendicular bisector vid and got a different answer