Question

F(x)= x²+1
a) f(t)

b) f(t+2)

c) f(x+h)

d) f(x+2)

Answer 1

F(x)= x²+1

a) f(t) = t²+1

b) f(t+2) = (t+2)²+1 = t²+4t+4+1 = t²+4t+5

c) f(x+h) = (t+h)²+1 = t²+2.t.h+h²+1

d) f(x+2) = (x+2)²+1= x²+4x+4+1 = x²+4x+5