I am trying to graph a fuction using matplotlib in Jupyter notebooks in python.

Question

I am trying to graph a fuction using matplotlib in Jupyter notebooks in python. My code is below. I don't understand why I am getting the error message.

import math def quadratic_formula (a, b, c): root! root2 return (-b + (-b - rooti, math. sqrt(b*b math. sqrt(b*b root 4*a*c))/(2*a) 4*a*c))/(2*a) - - time-1, time-2 quadratic-formula(a,b,c) = total time max(time 1 ,time 2) print('The ball will hit the ground in', total_time, seconds. ') import matplotlib.pyplot as plt for x in range(-4, 4, 1): y-16(x* *2)+20 (x)+5e d.append(x) e.append (y) fig- plt.figure() axes-fig.add_subplot (111) axes plot(d,e) plt.show( Traceback (most recent call last) TypeError ipython-input-2-f7a6de20daabs in () 7 for x in range(-4, 4, 1): > 8 y= -16(x"*2)+20(x)+50 9 d.append(x) 10 eappend(y) TypeError: 'int' object is not callable

Explanation / Answer

You are getting this error because you are not writing expression properly

Compiler or Interpreter doesn't understant like human so we need to specify each symbol at each place properly

So in you expression:

y=-16(x**2)+20(x)+50 => you are trying to multiply two values without multiplicaton operator

-16 and x**2, 20 and x to multiply these you need to put * operator between them

Pleae find correct expression below

y=-16*(x**2)+20*(x)+50

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