ajutatima!!!!!!!!!! dau corona
![Ajutatima Dau Corona class=](https://ro-static.z-dn.net/files/dac/81eaa6c448a6acb1d15f0fd2913335b8.jpg)
Răspuns:
f(x)=ax-1
f(1)=1
f(1)=a*1-1=1
a-1=1
a=2
b)f(x)=2x+b
f(-1)=1
f(-1)=2*(-1)+b=1
-2+b=1
b=3
c)f(x)=-x²+1
f(c)= -15
f(c)=-c²+1=-15
-c²=-16
c²=16
c=4
f(x)=lx+2l
f(d)=3
ld+2l=3
d+2= -3
d=-5∈R_
x+2=3
x=1∉R_
d= -5
Explicație pas cu pas: