Solving the system of linear equations: by Elimination:
6x + 3y = 12
2x + 6y = 14
by substitution
2x - 5y = 16
3x + 2y = 5
graphing method
y = 4x - 4
y = -x + 1

Question

Алгебра: Solving the system of linear equations: by Elimination: 6x + 3y = 12 2x + 6y = 14 by substitution 2x - 5y = 16 3x + 2y = 5 graphing method y = 4x - 4 y = -x + 1

asdfgh21 · Accepted Answer

А) Sinx/2 = -1/2     x/2 = (-1)^n arcSin(-1/2) + nπ, n ∈Z     x/2 = (-1)^(n+1) *π/6 + nπ, n ∈Z     x = (-1)^(n+1)*π/3 + 2nπ, n ∈Z б) 2XosxCos4x - Cosx = 0     Cosx(2Cos4x -1) = 0 Cosx = 0               или          2Cos4x -1=0 x = π/2 + πk , k ∈Z                 Cos4x = 1/2                                                4x = +-arcCos1/2 + 2πn, n ∈Z                                                4x = +- π/3 + 2πn, n ∈Z                                                x = +-π/12 + πn/2 , n ∈Z  в) Sinx...

Solving the system of linear equations: by Elimination: 6x + 3y = 12 2x + 6y = 14 by substitution 2x - 5y = 16 3x + 2y = 5 graphing method y = 4x - 4 y = -x + 1

MOGZ ответил

Solving the system of linear equations: by Elimination:
6x + 3y = 12
2x + 6y = 14
by substitution
2x - 5y = 16
3x + 2y = 5
graphing method
y = 4x - 4
y = -x + 1