1.You are saving for a new car which will cost $14500.You save by putting $200 a month into a saving account which gives 0.1%interest a month .After how many months will you be able to afford to buy the car
2.Find the coordinates of the points on the curve with equation y=4x-(16/3)x^3 where the tangents to the curve are parallel to the x-axis .
楼下的高手:
第一题怎么得出结论的?有个关系式吧