Question

Se considera functiile f:R⇒R,f(X)=2x+b si g:R⇒R,g(x)=ax+6. Determinati functiile, stiind ca punctul de intersecti a celor doua grafice esteA(1;1)

Answer 1

f(1)=g(1)
f(1)=2+b=1 ⇒ b=-1 ⇒ f(x)=2x-1
g(1)=a+6=1 ⇒ a=-5 ⇒ g(x)=-5x+6