Tangent Line
1. The problem asks to find the equation of the tangent line to the curve
$$y = x^{3/2} + 3x + 1$$
at the given point $(2,3)$.
2. First, verify the point lies on the curve by substituting $x=2$:
$$y = 2^{3/2} + 3(2) + 1 = \\ 2^{1.5} + 6 + 1 = \\ \sqrt{2^3} + 7 = \\ \sqrt{8} + 7 = \\ 2\sqrt{2} + 7 \approx 2.828 + 7 = 9.828.$$
The point $(2,3)$ does not satisfy $y=x^{3/2} + 3x + 1$. This means either the point or the function is misstated.
3. Assuming the original function intended is $y = x^{3/2} - 3x + 1$ to suit the point $(2,3)$, verify again:
$$y = 2^{3/2} - 3(2) + 1 = 2.828 - 6 + 1 = -2.172$$ which also does not equal 3.
4. Without changing the function, but since the user provided the point $(2,3)$, we will find the tangent line at $x=2$. The derivative $y' = \frac{d}{dx}(x^{3/2} + 3x + 1)$ is:
$$y' = \frac{3}{2}x^{1/2} + 3.$$
5. Evaluate $y'(2)$:
$$y'(2) = \frac{3}{2}(\sqrt{2}) + 3 = \frac{3}{2} \times 1.414 + 3 = 2.121 + 3 = 5.121.$$
This is the slope of the tangent line at $x=2$.
6. Compute the actual $y$ at $x=2$ from the function:
$$y(2) = 2^{3/2} + 3(2) + 1 = 2.828 + 6 + 1 = 9.828.$$
So the point on the curve at $x=2$ is $(2, 9.828)$.
7. Equation of a line with slope $m$ through point $(x_0, y_0)$ is:
$$y - y_0 = m(x - x_0).$$
Substituting $m=5.121$, $x_0=2$, and $y_0=9.828$ gives:
$$y - 9.828 = 5.121(x - 2).$$
8. Simplify the tangent line equation:
$$y = 5.121x - 10.242 + 9.828 = 5.121x - 0.414.$$
**Final answer:** The equation of the tangent line to the curve $y = x^{3/2} + 3x + 1$ at $x=2$ is
$$y = 5.121x - 0.414.$$