Whakaoti i te 13cos(13)-2*13^2+3*13-1

$$13 \cos ( 13 ) -2 \times { 13 }^{ 2 } +3 \times 13-1$$

Aromātai

$$-287.3331891577919424$$

Ngā Upane Otinga

Evaluate trigonometric functions in the problem

$$13 \cdot 0.9743700647852352 - 2 \cdot {(13)} ^ {2} + 3 \cdot 13 - 1$$

Whakareatia te 13 ki te 0.9743700647852352, ka 12.6668108422080576.

$$12.6668108422080576-2\times 13^{2}+3\times 13-1$$

Tātaihia te 13 mā te pū o 2, kia riro ko 169.

$$12.6668108422080576-2\times 169+3\times 13-1$$

Whakareatia te 2 ki te 169, ka 338.

$$12.6668108422080576-338+3\times 13-1$$

Tangohia te 338 i te 12.6668108422080576, ka -325.3331891577919424.

$$-325.3331891577919424+3\times 13-1$$

Whakareatia te 3 ki te 13, ka 39.

$$-325.3331891577919424+39-1$$

Tāpirihia te -325.3331891577919424 ki te 39, ka -286.3331891577919424.

$$-286.3331891577919424-1$$

Tangohia te 1 i te -286.3331891577919424, ka -287.3331891577919424.

$$-287.3331891577919424$$

Tauwehe

$$-287.3331891577919424$$