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?

Submitted by: Administrator
here temp is direstly proportional to -t^2/2+8t+3

so at 4pm -4^2/2+4*8+3 is 27

at 9 pm -9^2/2+9*8+3 is 70.5

so diff is 34.5
Submitted by: Administrator

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