Maximum and Minimum Value Word Problems - Quadratic Equations

Thank you for making this easier to understand. My professor makes this harder than it is.

respected sir, can you please help me with this question : A ball is projected with speed u at an angle
θ
to the horizontal. The range R of the projectile is given by
R
=
u
2
sin
2
θ
g

for which value of
θ
will the range be maximum for a given speed of projection? (Here g= constant

YES! Ive been looking for this forever thank u!

is this @powerdf??? LOL

MR. Organic Chemistry Tutor, once again this is an awesome video/lecture on finding The Maximum and Minimum Value of a Quadratic Equation. These are excellent problems that leads directly into Calculus One.

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When the ad for the video is about not finding math help but magically here it is, only to receive the help after I skip the ad

Thanks for the exmplanation.

what if the a value is positive

As always. Best explanation.

I thought b was the second coefficient not the first..

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Thanks!