k^(1/2)=400

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Solution for k^(1/2)=400 equation: 


D( k )

k < 0

k < 0

k in <0:+oo)

k^(1/2) = 400 // - 400

k^(1/2)-400 = 0

1*k^(1/2) = 400 // : 1

k^(1/2) = 400

k^(1/2) = 400 // ^ 2

k = 160000

k = 160000

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