A professional race-car driver buys a car that can accelerate at +5.9m/s^2.The racer decides to race
题目
A professional race-car driver buys a car that can accelerate at +5.9m/s^2.The racer decides to race against another driver in a souped up stock-car.Both start from rest,but the stock-car driver leaves 1.0s before the driver of the race car.The stock car moves with a constant acceleration of +3.6m/s^2.
a.find the time it takes the race-car driver to overtake the stock-car driver.
b.Find the distance the two drivers travel before they are side by side.
c.find the velocities of both cars at the instant they are side by side.
答案
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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