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प्रश्न
The instantaneous rate of change at t = 1 for the function f (t) = te-t + 9 is ____________.
पर्याय
0
2
9
-1
MCQ
रिकाम्या जागा भरा
उत्तर
The instantaneous rate of change at t = 1 for the function f (t) = te-t + 9 is 0.
Explanation:
`"f'" ("t") = "te"^-"t" (-1) + "e"^-"t" => "f'" (1) = -"e"^-1 + "e"^-1 = 0`
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