(4-9x)^(-1/2)

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Solution for (4-9x)^(-1/2) equation: 


D( x )

4-(9*x) < 0

4-(9*x) = 0

4-(9*x) < 0

4-(9*x) < 0

4-9*x < 0

4-9*x < 0 // - 4

-9*x < -4 // : -9

x > -4/(-9)

x > 4/9

4-(9*x) = 0

4-(9*x) = 0

4-9*x = 0

4-9*x = 0 // - 4

-9*x = -4 // : -9

x = -4/(-9)

x = 4/9

x in (-oo:4/9)

(4-(9*x))^(-1/2) = 0

(4-9*x)^(-1/2) = 0

1/((4-9*x)^(1/2)) = 0

x belongs to the empty set

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