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函数的平均变化率（续）
函数在区间上的平均变化率是什么意思？
1. Summary
Summary
2. Soda temperature's first average rate
A can of soda warms from 37.00 F at t = 0 to 44.74 F at t = 5 minutes. What is its average rate of change on [0,5], in degrees Fahrenheit per minute? Round to three decimal places.
3. Reading the car's position graph
On a car's position graph (thousands of feet against minutes), a segment is steep and rising, then flat, then gently rising. What is the car doing?
4. Depth rate in the conical tank
An inverted conical tank fills at a constant volumetric rate. How does the depth's average rate of change behave on successive equal time intervals?
5. A cooling can warms at a steady rate
As the soda can approaches room temperature, its temperature rises by the same number of degrees every five minutes.