(本题8分)一个实验室在0:00—2:00保持20℃的恒温,在2:00—4:00

(本题8分)一个实验室在0:00—2:00保持20℃的恒温,在2:00—4:00匀速升温,每小时升高5℃,写出时间t(单位:时)与实验室温度T(单位:℃)之间的函数解析式,并画出图象。

 

 

 

答案

0≦t≦2,T=20,2<t≦4,T=5t+10

解析:略

 

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