Calculus Volume 3 · 免费预览
参数曲线的微积分
对参数定义的曲线进行求导和积分,可以把斜率、弧长和表面积转化为关于参数的积分;其中利用链式法则求斜率,利用速率求弧长。
1. Slope from the parameter
Slope from the parameter
2. Higher derivatives and tangent lines
Higher derivatives and tangent lines
3. Arc length along a parametric curve
Arc length along a parametric curve
4. Surfaces of revolution
Surfaces of revolution
5. Slope of a parametric curve
For x(t) = t squared and y(t) = 2t, what is the slope dy/dx at the parameter value t = 2?
6. Locating a vertical tangent
For a parametric curve, at which parameter values does the curve have a vertical tangent line?
7. Arc length integrand
Which integrand gives the arc length of a parametric curve over the interval from a to b?
8. Arc length of a straight parametrization
For x = 3t and y = 4t on the interval from 0 to 2, what is the arc length?
9. Surface area by revolution
Which expression gives the area of the surface formed by revolving a parametric curve about the x axis?
10. Parametric versus Cartesian setup
For a curve given parametrically, which computation finds the tangent line's slope at a point?
11. Slope at a parameter value
For x(t) = t squared and y(t) = 2t, what is the slope dy/dx at t = 2? Give a decimal number.
12. A second derivative
For x(t) = t squared and y(t) = t cubed, what is the second derivative of y with respect to x at t = 1? Give a decimal number.
13. Length of a straight path
For x = 3t and y = 4t on the interval from 0 to 2, what is the arc length? Give a number.
14. Slope with a linear coordinate
For x(t) = t and y(t) = t squared, what is the slope dy/dx at t = 3? Give a number.