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# GDB discussion spring 2015

Dear Student,
GDB  starting date : 17 august 2015 ;  closing date: 18 august 2015    . The question is as under:

A train is moving at the speed of 30 m/sec. Suddenly brakes are applied. The speed of the train per second after t seconds is given by

 Time(t) 0 5 10 15 20 25 30 35 40 45 Speed(s) 30 24 19 16 13 11 10 8 7 5

Which quadrature rule is used to determine the distance moved by the train in 45 seconds and why?

Note: If the answer will not be precised and contains irrelevant material then it will not be entertained.

Instructions

• Only post your comments on the concern Graded MDB forum and not on regular MDB forum.
• Write your comments in the plain text and avoid math type symbols and figures/graphs/images.
• Zero marks will be given to copied or irrelevant comments.
• Due date will not be extended.
• No description will be accepted through e-mail.

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### Replies to This Discussion

koi to start kro discussion

ANY IDEA FRIENDS

Irha princess can u tell me which book u r used for solution? Kindly send the link....

yar ye link to chalta e nai ha....

Correct..............

With Simpson 3/8 rule, it seems to offer slightly more accurate answer than the former. However, the cost associated with Simpson 3/8 rule (using 3rd order polynomial function) is significantly higher than the one associated with Simpson 1/3 rule (using 2nd order polynomial function).

However, Simpson 3/8 rule can be used with the number of segments equal to 3,6,9,12,.. (can be certain odd or even numbers that are multiples of 3).

word m bana kr idr upload krni te na ma krwa deti submit apni gdb please jaldi se upload kr den

Gdb me isko solve ni krna just btana which method will use for solvng the problem and why?

Which quadrature rule is used to determine the distance moved by the train in 45 seconds and why?

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