[填空题]
Alexandros monitors the tempe h ni+1:4,(gptfngxb krature d i/ ;j8 voks8(yt/fmuyuring a particular day in Athens.
The table below shows some of his findings.
Based on his observations, Alexandros concludes that the temperature, T, in $^{\circ}C$, during the day can be modelled by the equation
$T=asin(b(t−c))+d$,0≤t≤24,
where t is the elapsed time, in hours, since midnight.
1.Write down the value of:
(1)a;
(2)d.
2.Find the value of b. b ≈
3.Find the smallest possible value of c, given c>0. c =
4.Find the time, in hours and minutes, when the temperature first reaches $35^{\circ}C$ during the day.
