Recent content by znaya

:-) I can't believe the time I wasted on this... I was going crazy, already doubting of my skills... Thanks again.

google says it's wrong! OMG, just found the error! My calculator returns 231 = 2147483647 But google returns 231 = 2147483648. The error is exactly there. The calculator miscalculates 231! I repeated the sum hundreds of times but always using the same calculator... Thanks.

Homework Statement Convert 0xC4630000 to decimal. Homework Equations The Attempt at a Solution First attempt: 0xC4630000 12(167) = 12(268435456) = 3221225472 4(166) = 4(16777216) = 67108864 6(165) = 6(1048576) = 6291456 3(164) = 3(65536) = 196608 0(163) = 0(4096) = 0 0(162) = 0(256) =...

##A## represents the amplitude of the function, the value that the function return when ##x = 0##

##sinc(x) = {\frac{\sin(\pi x)}{\pi x}}## The ##sin()## is positive between ##-2 \pi## and ##- \pi## and between ##0## and ##\pi## and is negative between ##- \pi## and ##0## and between ##\pi## and ##2 \pi##...

Homework Statement For the function ##V(f) = A \tau sinc(f \tau)## in the picture how do you conclude that the argument of ##V(f)## is 0º, +180º or -180º? Homework Equations ##arg = arctan({\frac{Im}{Re}})## The Attempt at a Solution The upper graphic represents the absolute value of the...

Stephen Tashi, donpacino, thank you so much for your help.

for x=-2, y=2 for x=2, y=2 for x=(2+(-2)) y=0 i see... so it seems my first thought was right...

http://www.icoachmath.com/math_dictionary/Linear_Function.html Definition of Linear Function A function that can be graphically represented in the Cartesian coordinate plane by a straight line is called a Linear Function.

it means that the system will do the same no matter what time...

Homework Statement Consider a circuit which output is the absolute value of the input signal, this is, y(t)=|x(t)|? a) this circuit is not a LIT system because it implements a non linear operation; b) this circuit is a LIT system that creates phase distortion; c) this circuit is a LIT system...

Hi. I reviewed all my calculations, I had huge mistakes all over! The current produced by the voltage source should be 2<-113º (or -0.78-1.84j). The amount of current from the current source (using a current divider) should be 8<47º (or 5.46+5.85j). -0.78-1.84j - (5.46+5.85j) = -6.24-7.69j...

Homework Statement Consider, in the circuit from the image, i1(t) = 5 cos(2t + 10º) v1(t) = 10 cos(2t - 60º). Find the value of the current ix(t). Options given: A: ix(t) = 9.9 cos(2t - 129.2º) B: ix(t) = 9 cos(2t - 29.2º) C: ix(t) = 99 cos(2t + 129.2º) D: ix(t) = 0.99 cos(2t +...

20 cos(ωt - 40º) = 20 sin(ωt + 50º), right? v1 is in advance, right?

Homework Statement Consider v1 = 30 sin(ωt + 10º) and v2 = 20 cos(ωt - 40º) A: v1 is in advance to v2 B: v1 differs 50º from v2 C: v2 is in advance to v1 D: v1 is in quadrature to v2 Homework Equations The Attempt at a Solution I think the correct answer is A because v1's angle is nearer...