TCS - In Madras, temperature at noon varies according to -t^2/2 + 8t + 3, where t is elapsed time. Find ho

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In Madras, temperature at noon varies
according to -t^2/2 + 8t + 3, where t is elapsed time. Find how much
temperature more or less in 4pm to 9pm. Ans. At 9pm 7.5 more

CAN ANYONE LET ME KNOW HOW TO SOLVE THIS ... and t steps for solving it

Total Answers and Comments: 5

Last Update: July 25, 2007 Asked by: Janani

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September 30, 2006 09:40:31

neha

RE: In Madras, temperature at noon varies accord...

jus substitute t 4 in the equation n u will get 27

next substitute t 9 then u will get 34.5

34.5-27 7.5

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March 06, 2007 12:45:39

sami

RE: In Madras, temperature at noon varies accord...

integrate it with limits 4 to 9 okay u will get the difference
or
substitute 4 and then 9 u can then use the necessary value
i don know which one is correct

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March 07, 2007 04:17:57

Prajapati Ketan

RE: In Madras, temperature at noon varies accord...

In equestion first put t 9

we will get 34.5...........................(1)

now put t 4

we will get 27..............................(2)

so ans 34.5-27

7.5

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June 11, 2007 16:30:26

xxx

RE: In Madras, temperature at noon varies accord...

change the value 7.5 into percentage

(7.5/27)*100 27 high

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July 25, 2007 12:25:52

pramod umakant bhat

RE: In Madras, temperature at noon varies accord...

Substitute the value given as time i.e. 4 pm and 9 pm in the given equation.
then find the difference
when t 9
-9^2/2 + 8*9+3 34.5

when t 4
- 4^2/2+8*9+3 27

finally

34.5 - 27 7.5 (ans)

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