N/(4-N)3

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Solution for N/(4-N)3 equation: 


D( N )

4-N = 0

4-N = 0

4-N = 0

4-N = 0 // - 4

-N = -4 // * -1

N = 4

N in (-oo:4) U (4:+oo)

N/(4-N) < 3 // - 3

N/(4-N)-3 < 0

N/(4-N)+(-3*(4-N))/(4-N) < 0

N-3*(4-N) < 0

4*N-12 < 0

(4*N-12)/(4-N) < 0

(4*N-12)/(4-N) < 0 // * (4-N)^2

(4*N-12)*(4-N) < 0

( 4*N-12 )

4*N-12 < 0 // + 12

4*N < 12 // : 4

N < 12/4

N < 3

( 4-N )

4-N < 0

-N < -4 // * -1

N > 4

	(-oo:3)	(3:4)	(4:+oo)
4*N-12	-	+	+
4-N	+	+	-


N in (-oo:3) U (4:+oo)

(-oo:3) U (4:+oo)

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