Questions: Find the equation for the tangent plane to the surface z=e^(2x^2+3y^2) at the point (0,0,1).
z=0
z=1
z=2
z=-1
Transcript text: Question 14
5 pts
Solve the problem.
Find the equation for the tangent plane to the surface $z=e^{2 x^{2}+3 y^{2}}$ at the point $(0,0,1)$.
$z=0$
$z=1$
$z=2$
$z=-1$
Solution
Solution Steps
To find the equation of the tangent plane to the surface \( z = e^{2x^2 + 3y^2} \) at the point \((0,0,1)\), we need to:
Compute the partial derivatives of \( z \) with respect to \( x \) and \( y \).
Evaluate these partial derivatives at the point \((0,0,1)\).
Use the point-slope form of the plane equation: \( z - z_0 = f_x(x_0, y_0)(x - x_0) + f_y(x_0, y_0)(y - y_0) \).
Step 1: Define the Surface and Point
We are given the surface defined by the equation \( z = e^{2x^2 + 3y^2} \) and the point at which we need to find the tangent plane, which is \( (0, 0, 1) \).
Step 2: Compute Partial Derivatives
We compute the partial derivatives of \( z \) with respect to \( x \) and \( y \):
\[
\frac{\partial z}{\partial x} = 4x e^{2x^2 + 3y^2}
\]
\[
\frac{\partial z}{\partial y} = 6y e^{2x^2 + 3y^2}
\]
Step 3: Evaluate Partial Derivatives at the Point
Next, we evaluate these partial derivatives at the point \( (0, 0) \):
\[
\frac{\partial z}{\partial x} \bigg|_{(0,0)} = 4(0)e^{2(0)^2 + 3(0)^2} = 0
\]
\[
\frac{\partial z}{\partial y} \bigg|_{(0,0)} = 6(0)e^{2(0)^2 + 3(0)^2} = 0
\]
Step 4: Write the Equation of the Tangent Plane
Using the point-slope form of the plane equation, we have:
\[
z - z_0 = \frac{\partial z}{\partial x} \bigg|_{(0,0)} (x - x_0) + \frac{\partial z}{\partial y} \bigg|_{(0,0)} (y - y_0)
\]
Substituting the values:
\[
z - 1 = 0 \cdot (x - 0) + 0 \cdot (y - 0)
\]
This simplifies to:
\[
z = 1
\]
Final Answer
The equation for the tangent plane to the surface at the point \( (0, 0, 1) \) is given by:
\[
\boxed{z = 1}
\]