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In this exercise, we are given four graphs labeled **A**, **B**, **C**, and **D**, each representing a different function. The task is to analyze each graph and create a complete variation table (tableau de variations) for each function, including limits as necessary.

To begin, I will identify the general behavior and characteristics of each graph:

### Graph **A**:
- This appears to be a cubic function, as it has a turning point, with the curve decreasing and then increasing.
- The function seems to approach infinity as \(x\) goes to positive infinity and negative infinity as \(x\) approaches negative infinity.
- There seems to be a point where the slope changes sign, indicating a minimum and maximum point.

### Graph **B**:
- This is likely a rational function, as it has an asymptote on the vertical axis (\(x = 0\)), where the function tends to infinity.
- As \(x\) increases, the function increases sharply and seems to tend towards infinity.
- For \(x < 0\), the function decreases and seems to tend towards negative infinity.
  
### Graph **C**:
- Another rational function with a vertical asymptote at \(x = 0\), but this time, the function tends to negative infinity on the left of the vertical asymptote.
- On the right side of the asymptote, the function decreases from positive values and seems to approach 0 as \(x\) tends to infinity.

### Graph **D**:
- A rational function

On donne les courbes représentatives de 4 fonctions. Dresser le tableau de variations complet de chacune avec les limites.

This exercise involves analyzing the graphs of four functions, determining their variation tables, and understanding the limits and behavior of each function. The graphs include cubic and rational functions with key concepts like asymptotes and turning points.

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