f(x)=x^{2} - 9
g(x)=x + 3

Presešišče grafov:

x^{2} - 9 = x + 3
x^{2} - x - 9 - 3 = 0
x^{2} - x - 12 = 0 

(x - 4)(x + 3) = 0

x1 = 4
x2 = -3



g(x)=x + 3

y = 4 + 3 = 7
y2 = -3 + 3 = 0


Integral(Ploščina):

Zgornja Meja: 4
Spodnja meja: -3

absolutno integral ene - integral druge
\int{|f(x)|} - \int{g(x)}

b = Spodnja Meja
a = Zgornja Meja
Glej tu: https://www.desmos.com/calculator/1gkec5kw9o