nikakede
2022-09-14
Answered

$$2\mathrm{cos}2x$$ formula.

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asked 2022-03-30

$\alpha$ and $\beta$ are the roots of the quadratic equation.

$\omega \ne 1$ and ${\omega}^{13}=1$

If $\alpha =\omega +{\omega}^{3}+{\omega}^{4}+{\omega}^{-4}+{\omega}^{-3}+{\omega}^{-1}$

$\beta ={\omega}^{2}+{\omega}^{5}+{\omega}^{6}+{\omega}^{-6}+{\omega}^{-5}+{\omega}^{-2}$,

then quadratic equation, whose roots are $\alpha$ and $\beta$ is:

I tried finding the sum and product of roots and placing in the equation ${x}^{2}-(\alpha +\beta )x+(\alpha \times \beta )=0$ but I was not able to solve for it.

asked 2022-01-23

How do you graph $y=-{x}^{2}-4x-3?$

asked 2021-12-04

If $A=21$ and $B=2-3$

8 6-1-2

Find:

a) BA

(b) determinant B

(c) Adjoint B

(d) A-1

8 6-1-2

Find:

a) BA

(b) determinant B

(c) Adjoint B

(d) A-1

asked 2022-05-02

Quadratics Distance-Speed-Time Rate Word Problem

A small plane is travelling between Windsor and Pelee Island (a distance of approx. 60 km) and is directly affected by the prevailing winds. Thus, the actual speed of the plane with respect to the ground is the speed of the plane (160 km/h) plus or minus the wind speed, w. Develop a simplified equation for the total time it takes to make a round trip if the wind speed is w.

A small plane is travelling between Windsor and Pelee Island (a distance of approx. 60 km) and is directly affected by the prevailing winds. Thus, the actual speed of the plane with respect to the ground is the speed of the plane (160 km/h) plus or minus the wind speed, w. Develop a simplified equation for the total time it takes to make a round trip if the wind speed is w.

asked 2022-03-21

Solve the inequality: $\frac{a(1-a)}{n}<\frac{1}{{10}^{3}}$ for $a\in \mathbb{R}$ .

asked 2022-05-01

asked 2021-12-26

How do you find the roots of ${x}^{3}-12x+16=0$ ?