An internet service provider changes an initial fee of $65 and $18 per hour of labor for office internet installation. Which equ
2 answers:
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By taking <span>logarithmic of base 10
∴ </span><span>
∴ x log 4 = log 64
∴
∴ The correct choice is
</span><span>x = log base 10 of 64, all over log base 10 of 4</span>
Answer:
Step-by-step explanation:
The given quadratic form is of the form
.
Where .Every quadratic form of this kind can be written as
Observe that is a symmetric matrix. So
is orthogonally diagonalizable, that is to say,
where
is an orthogonal matrix and
is a diagonal matrix.
In our case we have:
The eigenvalues of are
.
Every symmetric matriz is orthogonally diagonalizable. Applying the process of diagonalization by an orthogonal matrix we have that:
Now, we have to do the change of variables to obtain
Which can be written as: