y = 2x² - lnx +3
вычислить у' при х=1/2 = 0.5
y' = 4x - 1/x
y'(0.5) = 4·0.5 -1/(0.5)
y'(0.5) = 2 - 2
y'(0.5) = 0
y = 2x² - lnx +3
вычислить у' при х=1/2 = 0.5
y' = 4x - 1/x
y'(0.5) = 4·0.5 -1/(0.5)
y'(0.5) = 2 - 2
y'(0.5) = 0