multip. IV times 10 = 65536a+320b=-297.0087
multip. V times 4 = 35840a+320b=-198.83152
subtr. V from IV = 29696a=-98.17718
so a =-.00330607
plug a into V: 8960(-.00330607)+80b=-49.70788
so 29.62243+80b=-49.70788
then 80b=-79.33031
b=-.99163
plug b into I: I (256)(-.00331)+16(-.99163)+c=111
so c=127.71344
the equation is: y= -.00330607x^2 - .99163x + 127.71344
my Model Function's Prediction of Temp.(x,y---tru y --dev.)
0 , 127.7134-------111-------16
16 , 111.001-------111-------0
32 , 92.5959----89.92782---2.7
48 , 72.4980----81.29913---8.8
64 , 50.7075----73.73517---23
80 , 27.2242----67.10455---39.9
96 , 2.0482-----61.29212 ---59.3
112 , -24.820---56.19691---81
ok. that is the 1st problem in the set. is that graph dev. supposed to be
off that much???
Looks good. You can use DERIVE anytime it seems appropriate, and I'll be using DERIVE syntax for derivatives and integrals (also giving you pointers about how to do derivatives and integrals in DERIVE, which once you understand what derivatives and integrals are is pretty easy).
Of course you have to be able to show things analytically (i.e., by working them out on paper), but DERIVE can be very handy for checking yourself and exploring patterns you don't have time to work out by hand. Then when you actually apply calculus in your engineering courses you'll likely be making extensive use of computer software like DERIVE.
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assignment #002
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Calculus I
03-27-2005
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19:07:52
Were you able to complete the DERIVE exercise?
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RESPONSE -->
yes.
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19:09:19
** If you weren't able to complete the exercise you should download the
30-day trial version of DERIVE and do so.
Note that the instructor neither recommends nor discourages you from
purchasing DERIVE. Except for the basic worksheet and other assignments
that may occur in the first part of the coruse DERIVE is not required and
references to DERIVE in the later part of the course will be optional.
This ends Query 2.**
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RESPONSE -->
ok, so when do i use it?
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