let f, g be Function of I[01],R^1; :: thesis: ( ( for x being Point of I[01] holds f . x = r * x ) & ( for x being Point of I[01] holds g . x = r * x ) implies f = g )
assume that
A2: for x being Point of I[01] holds f . x = r * x and
A3: for x being Point of I[01] holds g . x = r * x ; :: thesis: f = g
for x being Point of I[01] holds f . x = g . x
proof
let x be Point of I[01]; :: thesis: f . x = g . x
thus f . x = r * x by A2
.= g . x by A3 ; :: thesis: verum
end;
hence f = g ; :: thesis: verum