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Mathematics 22 Online
OpenStudy (marissalovescats):

Can anyone possibly help me with the rest of this AP Calc BC problem? (I shall post a picture)

OpenStudy (marissalovescats):

OpenStudy (amistre64):

i assume you need help with #3?

OpenStudy (marissalovescats):

Yes part c please :)

OpenStudy (marissalovescats):

Meow

OpenStudy (amistre64):

there it is :)

OpenStudy (amistre64):

what do you know about calculus and finding the slope at a given point to a function?

OpenStudy (amistre64):

i see it written there as g'(x) = f(t)

OpenStudy (amistre64):

g'(2) is the slope of the line at the point 2,g(2) so all we really need to know is what g'(2) is and what g(2) is

OpenStudy (marissalovescats):

I believe what I just did i got g(2) = 2 + pi and g'(2) =1

OpenStudy (amistre64):

those look good to me so out slope is 1, and our point is 2,2+pi how do we form the equation of a line if we know the slope and a point?

OpenStudy (marissalovescats):

Oh alright duh lol

OpenStudy (amistre64):

:)

OpenStudy (marissalovescats):

y-2=1(x-2+pi) lol

OpenStudy (amistre64):

almost, xo = 2, yo = 2+pi but yeah y - (2+pi) = 1(x-2)

OpenStudy (amistre64):

simplify to your hearts content

OpenStudy (amistre64):

for part d, take the derivative of g' and determine where it is 0 or undefined at

OpenStudy (marissalovescats):

I believe inflection points are where the graph of f changes concavity. So AKA when the slope of f'(t) is increasing/decreasing so I just have to find that

OpenStudy (amistre64):

slope of a straight line is 0, slope of a slanted line is its slope, and slope of a circle is 0 or undefined at the top and sides

OpenStudy (marissalovescats):

Yeah that I know

OpenStudy (amistre64):

might be tricky at the cusps, and im not sure, but i think a straight line has no inflection points, so the only one that may be doable is the top of the arc there

OpenStudy (marissalovescats):

Well g'(t) = f(t) so g''(t) = f'(t) and f'(t) are the points on the graph

OpenStudy (amistre64):

f'(t) is the slope of the curves on the graph

OpenStudy (amistre64):

in other words, the graph as is tells us the slope of g at any given point; the slope of the slope tells us about concavity

OpenStudy (marissalovescats):

I know and the points on the graph show us f'(t) and how the slope is changing I'll talk to my teacher tomorrow about my answer. Thanks for your help though today! I appreciate it!

OpenStudy (amistre64):

good luck ;)

OpenStudy (marissalovescats):

Thanks!

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