** Focal length= 1/(4C) or (1/4)C ?? According to my textbook and some websites, it's the second one [f = (0.25)* C]. Some textbooks are using the first one [ f= 1/(4C) ] like you. Which is right and which is wrong?? I am confused. Anyway, your explanation is GREAT
it's according to how you write the formula for the parabola if you write it as y=Cx^2 then you use the first one 1/(4C), which is easier to remember if you write the formula for the parabola as y=(1/C)x^2 then you use the second one C/4. it's just a matter of convention, just choose one and stick with it to help with mmemorization (I would recommend the first one as it's the one used in the lectures) .
Best doctor forever♥️
عظمة على عظمة يادوك ❤
Thank you Doctor ❤
اسطورية بصراحه
best doctor❤️❤️❤️❤️
عظمة ، شكرا يا دكتور🥺❤️
thank you so much for this effort 🥰
Thanks a lot❤
شرح عظمة❤️❤️
شكرا دكتورة
يا دكتور مثال إلى فى اخر ٧ دقائق ليه مأخذتش 20 و ساوتها ب 1/c
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شكرا جدا
the greatest❤
❤❤❤❤❤❤❤❤
** Focal length= 1/(4C) or (1/4)C ??
According to my textbook and some websites, it's the second one [f = (0.25)* C]. Some textbooks are using the first one [ f= 1/(4C) ] like you. Which is right and which is wrong?? I am confused.
Anyway, your explanation is GREAT
First one 1/4C
it's according to how you write the formula for the parabola if you write it as y=Cx^2 then you use the first one 1/(4C), which is easier to remember
if you write the formula for the parabola as y=(1/C)x^2 then you use the second one C/4.
it's just a matter of convention, just choose one and stick with it to help with mmemorization (I would recommend the first one as it's the one used in the lectures) .
❤️❤️❤️❤️❤️
❤️❤️❤️❤️❤️❤️