The state transition matrix for the systemx1̇ = 1 0x1

State transition matrix,
φ (t) = L^-1 [sI - A]^-1

= L^-1		s - 1			0		^-1
		-1			s - 1

= L^-1		1		s - 1			0
		(s - 1)²		1			s - 1

	x₁̇		=		1			0			x₁		+		1		u is
	x₂̇				1			1			x₂				1

		e^t			0
		e^t			e^t

		e^t			0
		t² e^t			e^t

		e^t			0
		t e^t			e^t