第 12 课 RD Sharma 解决方案 - 第 29 章飞机 - 练习 29.7
问题 1. 求下列平面的标量积形式的向量方程
解决方案:
(i)
Here,
We know that, represent a plane passing through a point having position vector and parallel to vectors and .
Here,
The given plane is perpendicular to a vector
We know that vector equation of plane in scalar product form is,
—(Equation-1)
Put and in (Equation-1),
The equation is required form is,
(ii)
Here,
We know that, represent a plane passing through a point having position vector and parallel to vectors and
Here,
The given plane is perpendicular to a vector
We know that, vector equation of a plane is scalar product is,
—(Equation-1)
Put value of and in (Equation-1)
Multiplying both the sides by (-1),
The equation in the required form,
(iii)
Given, equation of plane,
We know that, is the equation of a plane passing through point and parallel to and .
Here,
The given plane is perpendicular to a vector
We know that, equation of plane in scalar product form is given by,
Dividing by 3, we get
Equation in required form is,
(iv)
Plane is passing through and parallel to b and
问题 2. 求下列平面方程的笛卡尔形式:
解决方案:
(i)
Here, given equation of plane is,
We know that, represents the equation of a plane passing through a vector and parallel to vector and .
Here,
Given plane is perpendicular to vector
We know that, equation of plane in the scalar product form,
—Equation-1
Put the value of and in Equation-1,
Put
(x)(-3) + (y)(3) + (z)(-3) = -6
-3x + 3y – 3z = -6
Dividing by (-3), we get
x – y + z = 2
Equation in required form is,
x – y + z = 2
(ii)
Given, equation of plane,
We know that, represents the equation of a plane passing through the vector and parallel to vector and
Here,
The given plane is perpendicular to vector
We know that, equation of plane in scalar product form is given by,
—Equation-1
Put, the value of and in equation-1
Put
(x)(0) + (y)(-4) + (z)(2) = -2
-4y + 2z = -2
The equation in required form is,
2y – z = 1
问题 3. 求下列平面的非参数形式的向量方程:
解决方案:
(i)
Given, equation of plane is,
We know that, represents the equation of a plane passing through a point and parallel to vector and .
Given,
The given plane is perpendicular to
Vector equation of plane in non-parametric form is.
= (0)(2) + (3)(-5) + (0)(-1)
= 0 – 15 + 0
The required form of equation is,
(ii)
Given, equation of plane is,
We know that, represents the equation of a plane passing through a vector and parallel to vector and .
Here,
The given plane is perpendicular to vector
We know that, equation of a plane in non-parametric form is given by,
= (2)(20) + (2)(8) – (-1)(-12)
=40 + 16 + 12
Dividing by 4,
Equation of plane in required form is,