On the ellipse $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$ find the point $T=(x_0,y_0)$ such that the triangle bounded by the axes of the ellipse and the tangent at that point has the least area.
1. **Equation of the Tangent Line:**
   The equation of the ellipse is given by:
   \[
   \frac{x^2}{a^2} + \frac{y^2}{b^2} = 1
   \]
   The equation of the tangent line at the point \( T = (x_0, y_0) \) on the ellipse can be derived using the point-slope form of the tangent to an ellipse:
   \[
   \frac{xx_0}{a^2} + \frac{yy_0}{b^2} = 1
   \]

2. **Intersection with the Axes:**
   To find the points where this tangent line intersects the coordinate axes, we set \( y = 0 \) and \( x = 0 \) respectively:
   - For \( y = 0 \):
     \[
     \frac{xx_0}{a^2} = 1 \implies x = \frac{a^2}{x_0}
     \]
     So, the intersection with the x-axis is \( \left( \frac{a^2}{x_0}, 0 \right) \).
   - For \( x = 0 \):
     \[
     \frac{yy_0}{b^2} = 1 \implies y = \frac{b^2}{y_0}
     \]
     So, the intersection with the y-axis is \( \left( 0, \frac{b^2}{y_0} \right) \).

3. **Area of the Triangle:**
   The area of the triangle formed by the tangent line and the coordinate axes can be calculated using the formula for the area of a triangle with vertices at the origin and points on the axes:
   \[
   \text{Area} = \frac{1}{2} \left( \frac{a^2}{x_0} \right) \left( \frac{b^2}{y_0} \right) = \frac{a^2 b^2}{2 |x_0 y_0|}
   \]
   To minimize the area, we need to maximize \( |x_0 y_0| \).

4. **Maximizing \( |x_0 y_0| \) using AM-GM Inequality:**
   Using the Arithmetic Mean-Geometric Mean (AM-GM) inequality:
   \[
   \frac{x_0^2}{a^2} + \frac{y_0^2}{b^2} = 1
   \]
   By AM-GM:
   \[
   \frac{\frac{x_0^2}{a^2} + \frac{y_0^2}{b^2}}{2} \geq \sqrt{\frac{x_0^2}{a^2} \cdot \frac{y_0^2}{b^2}}
   \]
   Simplifying, we get:
   \[
   \frac{1}{2} \geq \frac{|x_0 y_0|}{|ab|}
   \]
   Therefore:
   \[
   |x_0 y_0| \leq \frac{|ab|}{2}
   \]
   Equality holds if and only if:
   \[
   \frac{x_0^2}{a^2} = \frac{y_0^2}{b^2}
   \]
   This implies:
   \[
   y_0^2 = \frac{b^2}{a^2} x_0^2 \implies x_0^2 = \frac{a^2}{2} \implies y_0^2 = \frac{b^2}{2}
   \]
   Hence, the points \( (x_0, y_0) \) that satisfy this are:
   \[
   \left( \pm \frac{a}{\sqrt{2}}, \pm \frac{b}{\sqrt{2}} \right)
   \]

Conclusion:
The points \( T = \left( \pm \frac{a}{\sqrt{2}}, \pm \frac{b}{\sqrt{2}} \right) \) are the points on the ellipse where the triangle formed by the tangent line and the coordinate axes has the least area.

The final answer is \( \boxed{ \left( \pm \frac{a}{\sqrt{2}}, \pm \frac{b}{\sqrt{2}} \right) } \)