Create quad.py

quad.py

@@ -0,0 +1,92 @@
+import matplotlib.pyplot as plt
+
+import numpy as np
+
+
+
+
+
+class Quadratic:
+
+    """Representing a quadratic expression in the form of ax² + bx + c"""
+
+    
+
+    def __init__(self,a : float, b : float, c : float) -> None:
+
+        # A class is created succesfully if the arguments of the class are either of float type or int type
+
+        if (type(a) == type(0.1) or type(a) == type(1)) and (type(b) == type(0.1) or type(b) == type(1)) and (type(c) == type(0.1) or type(c) == type(1)):
+
+            self.a = a
+
+            self.b = b
+
+            self.c = c
+
+        else:
+
+            raise ValueError("Argument must be of type int or float")
+
+    
+
+    def __repr__(self) -> str:
+
+        """ Printing a quadratic class """
+
+        return "Quad( {0}x² + {1}x + {2} )".format(self.a,self.b,self.c)
+
+    
+
+    def solveQuad(self) -> tuple[float,float]:
+
+        """Solving the expression assuming it is equal to 0. 
+
+        returns a tuple of 2 values"""
+
+
+
+        determinant = ((self.b ** 2) - (4 * self.a * self.c)) ** 0.5 # The determinant of a quadratic equation is the root of b² - 4ac
+
+        firstSolution = ((-1 * self.b) + determinant) / (2 * self.a)
+
+        secondSolution = ((-1 * self.b) - determinant) / (2 * self.a)
+
+        return (firstSolution,secondSolution)
+
+    
+
+    def evaluate(self, value):
+
+        """Evaluate the Quadratic expression. with x in ax² + bx + c as a numeric type"""
+
+        solution = ((self.a * (value ** 2)) + (self.b * value) + self.c)
+
+        return solution
+
+    
+
+    def drawFigure(self):
+
+        """Draws a quadratic graph of the quadratic expression and returns a matplotlib figure"""
+
+        x_axis = np.linspace(-10,10,50)
+
+        y_axis = self.evaluate(x_axis)
+
+        
+
+        figure, axes = plt.subplots()
+
+        
+
+        axes.plot(x_axis,y_axis, linewidth = 1)
+
+        axes.grid(visible = True)
+
+        axes.set_title(self)
+
+        axes.xaxis.set_minor_formatter(str(x_axis))
+
+        return figure
+