Whakaoti i te 1/2(n+1)(n+2)

$$\frac { 1 } { 2 } ( n + 1 ) ( n + 2 )$$

Aromātai

$$\frac{\left(n+1\right)\left(n+2\right)}{2}$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te \frac{1}{2} ki te n+1.

$$\left(\frac{1}{2}n+\frac{1}{2}\right)\left(n+2\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o \frac{1}{2}n+\frac{1}{2} ki ia tau o n+2.

$$\frac{1}{2}nn+\frac{1}{2}n\times 2+\frac{1}{2}n+\frac{1}{2}\times 2$$

Whakareatia te n ki te n, ka n^{2}.

$$\frac{1}{2}n^{2}+\frac{1}{2}n\times 2+\frac{1}{2}n+\frac{1}{2}\times 2$$

Me whakakore te 2 me te 2.

$$\frac{1}{2}n^{2}+n+\frac{1}{2}n+\frac{1}{2}\times 2$$

Pahekotia te n me \frac{1}{2}n, ka \frac{3}{2}n.

$$\frac{1}{2}n^{2}+\frac{3}{2}n+\frac{1}{2}\times 2$$

Me whakakore te 2 me te 2.

$$\frac{1}{2}n^{2}+\frac{3}{2}n+1$$

Whakaroha

$$\frac{n^{2}}{2}+\frac{3n}{2}+1$$

Ngā Upane Otinga

Whakamahia te āhuatanga tohatoha hei whakarea te \frac{1}{2} ki te n+1.

$$\left(\frac{1}{2}n+\frac{1}{2}\right)\left(n+2\right)$$

Me hoatu te āhuatanga tohatoha mā te whakarea ia tau o \frac{1}{2}n+\frac{1}{2} ki ia tau o n+2.

$$\frac{1}{2}nn+\frac{1}{2}n\times 2+\frac{1}{2}n+\frac{1}{2}\times 2$$

Whakareatia te n ki te n, ka n^{2}.

$$\frac{1}{2}n^{2}+\frac{1}{2}n\times 2+\frac{1}{2}n+\frac{1}{2}\times 2$$

Me whakakore te 2 me te 2.

$$\frac{1}{2}n^{2}+n+\frac{1}{2}n+\frac{1}{2}\times 2$$

Pahekotia te n me \frac{1}{2}n, ka \frac{3}{2}n.

$$\frac{1}{2}n^{2}+\frac{3}{2}n+\frac{1}{2}\times 2$$

Me whakakore te 2 me te 2.

$$\frac{1}{2}n^{2}+\frac{3}{2}n+1$$