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Tohaina

-x-2y-3y+x-y
Pahekotia te x me -2x, ka -x.
-x-5y+x-y
Pahekotia te -2y me -3y, ka -5y.
-5y-y
Pahekotia te -x me x, ka 0.
-6y
Pahekotia te -5y me -y, ka -6y.
\frac{\mathrm{d}}{\mathrm{d}y}(-x-2y-3y+x-y)
Pahekotia te x me -2x, ka -x.
\frac{\mathrm{d}}{\mathrm{d}y}(-x-5y+x-y)
Pahekotia te -2y me -3y, ka -5y.
\frac{\mathrm{d}}{\mathrm{d}y}(-5y-y)
Pahekotia te -x me x, ka 0.
\frac{\mathrm{d}}{\mathrm{d}y}(-6y)
Pahekotia te -5y me -y, ka -6y.
-6y^{1-1}
Ko te pārōnaki o ax^{n} ko nax^{n-1}.
-6y^{0}
Tango 1 mai i 1.
-6
Mō tētahi kupu t mahue te 0, t^{0}=1.