Recent content by tuanle007

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    How to generate this signal, what equipment do I need?

    what goes into the signal on the left?
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    How to generate this signal, what equipment do I need?

    Can someone teach me how to GENERATE that kinda signal into pin 26 AND pin 53? Is there a way to do this? Currently, my system is providing the input to those pins but I want to create a stand alone input so I can verify the output of my card. Can someone please help me. Thank you!
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    Rotating Coordinates by 45 Degrees: A Formula for Graphing Help

    okay. i have 2 end points (265,218) to (503,218) and i need to rotate it 45 degree. what is the formula i can use to do this? by the axis, i think its roughly about (313, 290) to (454, 144) can you help me prove this? the cos(45) and sin(45) doesn't come out close to it for me.
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    Rotating Coordinates by 45 Degrees: A Formula for Graphing Help

    i sort of understand the (100cos(45),100sin(45)) but for instant my number Horizonal line is (500,220), (300, 220) it would be (500,220) to (500cos(45),500sin(45))?
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    Rotating Coordinates by 45 Degrees: A Formula for Graphing Help

    okay, sorry about this.. the x, y value i have given you was from other images.. for this particular one.. the center point is x=400 y=220 so i start by drawing the red oval. about 100 points from x and y. givin 4 points OVAL (500,220), (300,220) (400,220), (400,120)...
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    Rotating Coordinates by 45 Degrees: A Formula for Graphing Help

    I need to redraw the vertical/horizontal line so that it is correct. i know the angle of the rotation. i just don't remember how to do my trig to redraw the line. i want these yellow lines?I have already draw the green lines. i know that the green line and the yellow line is about 45 degree...
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    Rotating Coordinates by 45 Degrees: A Formula for Graphing Help

    hi, can someone please help me with this situation. i have this object. and i have drawn an oval, the horizontal, and vertical line. y=145 x=203 when degree = 0 how would i draw the vertial/horizontal line how if it is 45 degree different?
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    Undergrad How do I use a Linear Prediction Filter?

    does anyone know how to do this? can you help me? thank you
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    Undergrad How Do You Compute E(f(x)) for Uniformly Distributed Variables?

    can someone please help me with this question. i don't know how to do this.
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    Self-Reproducing Rays in a symmetric Resonator

    Homework Statement Self-Reproducing Rays in a symmetric Resonator. Consider a symmetric resonator using two concave mirrors of radii R separated by a distance d=3|R|/2. After how many round trips through the resonator will a ray retrace its path? Homework Equations The Attempt at...
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    How Does Material Dispersion Affect Pulse Length in a Waveguide?

    i got it. thank you!
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    How Does Material Dispersion Affect Pulse Length in a Waveguide?

    Homework Statement A Light emitting diode (LED) drives a single mode waveguide that is 10 km long, and has a material dispersion of – 100 ps/km/nm for wavelengths near 800 nm. The LED radiation has a spectral width of 60 nm and is centered at 800 nm. a) If the LED is pulsed on and off in...
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    Solving Fabry-Perot Problem: Increase L by \lambda/2 to Scan FSR

    my book doesn't have FSR anywhere. I have never seen this type of problem. can you please guide me
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    I used the equation n1sinθ1 = n2sinθ2 and plugged in the values.

    i got i = 73.8 degree ?
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    I used the equation n1sinθ1 = n2sinθ2 and plugged in the values.

    so using snell's law will help me find the exit angle?