Javier works in a photo lab and needs to make a reduced copy of a photograph that is 8 inches long. The customer wants the copy
2 answers:
Answer:
Javier should not press the button five time.
Step-by-step explanation:
The given scenario says that Javier claimed that pressing the button 5 times would be enough to fulfill the customer's request. So, lets check that.
We will start at 8 inches.
Press once, inches.
Pressing again, we get inches.
Again pressing we get inches.
Again we get inches.
Again we get inches.
We can clearly see here that pressing 4 or 5 times does not get 4.5 inches exactly as claimed by Javier.
Therefore, Javier claim is not right and his boss is right.
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Answer:
0 ≤ Ф ≤ 4π.
Step-by-step explanation:
since x²+y²/2 = 1, then x²+s² = 1, with s = (y/√2)². Hence, (x,s) = (cos(Ф),sin(Ф)) and (x,y,z) = (cos(Ф),√2 sin(Ф), cos(Ф)-2). This expression evaluated in zero gives as result (1,0,-1). The derivate of this function is (-sin(Ф),√2 cos(Ф), -sen(Ф))
the norm of the derivate is √(sin²(Ф) + 2cos²(Ф)+sin²(Ф)) = √2. In order to make the norm equal to 1, i will divide Ф by √2, so that a √2 is dividing each term after derivating.
We take
Note that
Whose square norm is 1/2cos²(Ф/2)+sen²(Ф/2)+1/2cos²(Ф/2) = 1. This is te parametrization that we wanted.
The values from Ф range between 0 an 4π, because the argument of the sin and cos is Ф/2, not Ф, Ф/2 should range between 0 and 2π.