4k^2-4k+1=0

解

4 k^{2} - 4 k + 1 = 0

k = \frac{1}{2}

十進法表記

k = 0.5

解答ステップ

4 k^{2} - 4 k + 1 = 0

解くとthe二次式

k_{1, 2} = \frac{- ( - 4 ) \pm ( - 4 ) ^{2} - 4 \cdot 4 \cdot 1}{2 \cdot 4}

(- 4)^{2} - 4 \cdot 4 \cdot 1 = 0

k_{1, 2} = \frac{- ( - 4 ) \pm 0}{2 \cdot 4}

k = \frac{- ( - 4 )}{2 \cdot 4}

\frac{- ( - 4 )}{2 \cdot 4} = \frac{1}{2}

k = \frac{1}{2}

二次equationの解:

k = \frac{1}{2}