- #1
pamparana
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Hello everyone,
This is not exactly my homework question. I was looking at the assignments on MIT open courseware page for Single variable calculus and came across this one:
Problem statement
Quirk is a flat planet. On the planet Quirk, a cell phone tower is a 100-foot pole on top of a green mound 1000 feet tall whose outline is described by the parabolic equation y = 1000 − x2. An ant climbs up the mound starting from ground level (y = 0). At what height y does the ant begin to see the tower?
I guess I will need the derivative at some point: f'(x) = -2x. So, it has a negative slope.
I am having trouble visualizing the problem. So, the curve meets the y axes at height 1000 and the pole is another 100 feet, so I have a line from (0, 1100) which will meet the curve at some point P. I have to find this point P. Is that correct?
I guess I will need to find the slope of this line but I am having trouble seeing how this could connect to the slope of the tangent line to the parabola at point P.
Thanks for any help you can give me.
/Luca
This is not exactly my homework question. I was looking at the assignments on MIT open courseware page for Single variable calculus and came across this one:
Problem statement
Quirk is a flat planet. On the planet Quirk, a cell phone tower is a 100-foot pole on top of a green mound 1000 feet tall whose outline is described by the parabolic equation y = 1000 − x2. An ant climbs up the mound starting from ground level (y = 0). At what height y does the ant begin to see the tower?
Homework Equations
I guess I will need the derivative at some point: f'(x) = -2x. So, it has a negative slope.
The Attempt at a Solution
I am having trouble visualizing the problem. So, the curve meets the y axes at height 1000 and the pole is another 100 feet, so I have a line from (0, 1100) which will meet the curve at some point P. I have to find this point P. Is that correct?
I guess I will need to find the slope of this line but I am having trouble seeing how this could connect to the slope of the tangent line to the parabola at point P.
Thanks for any help you can give me.
/Luca