SOLUTION: Hi I am having great difficulty trying to solve the following:- I have tried puting the equation for the first part of the problem into my TI-83 graphing calculator..but I ca

Question 113899: Hi
I am having great difficulty trying to solve the following:-
I have tried puting the equation for the first part of the problem into my TI-83 graphing calculator..but I cannot find a proper solution .. in fact I have tried all I can think of, this problem is causing me to fall behind with my work.
I have seen many examples of how to solve the problem for a rocket ..the fact that this is a two stage rocket..is causing me to not be able to solve it

I have spent ages trying to work out the way to program my TI-83 calculator to solve the following... I would appreciate guidance or direction to a site that can show me how to solve the following;-
the motion of two stage rocket is stated by it height y in metres above the ground since t seconds since launch.
Flies vertically Ist stage burns for 5 seconds and cuts out. 2nd stage rocket is under gravity alone.
modelled by the equations
Stage 1 height y = 10t2
time 0< t <5
stage 2 height y = - 5t2 + 150t - 375
time t >5
Question asks you plot function on ti 83, using an appropriate window for time(s)
hence sketch a position time graph for each stage of flight adding labels etc..
also ask you to plot use the n deriv function to plot rate of change of function.
If I can find the basic means of plotting graph I should be able to answer the question but cannot find anything in manual that is similar to solving a question of this type.
I appreciate yout time and effort and thanks !!!!!!!!
Found 2 solutions by amylouise93, jim_thompson5910:
Answer by amylouise93(2) (Show Source): You can put this solution on YOUR website!
yes okaii i think what you should do is get a tutor and let then help you or even the computer can help sometimes or evem you teacher or mam and dad ....
tra x
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
In order to graph pieces of a graph simply type

y1=(10x^2)(0< x <5)

and
y2=(5x^2 + 150x - 375)(x>5)

Notice how the interval is right next to the function. This is how you enter piecewise functions into a TI calculator

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