Question

va rog frumos urgentt!!!!
Fie f:R->R . f(x)=2x-1calculati :
a) abscisa egala cu 3
b)coordonata egala cu 3
c)x=y

Answer 1

A(3,y) => y = f(3)

y = 6 -1
y = 5

A(3,5)

B(x,3) => 3 = f(x)
3 = 2x - 1
2x = 4
x = 2

B(2,3)

C(x,x) => x= f(x)

x = 2x-1
x-2x = -1
-x = -1
x = 1

C(1,1)