7=r^(1/2)

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Solution for 7=r^(1/2) equation: 


D( r )

r < 0

r < 0

r in <0:+oo)

7 = r^(1/2) // - r^(1/2)

7-r^(1/2) = 0

-1*r^(1/2) = -7 // : -1

r^(1/2) = 7

( 7 < 0 i 1/2 in (0:1) ) => r należy do O

r belongs to the empty set

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