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    Engineering Math - Complex Roots and Powers

    Yeah, I think you're probably right. Thanks again! :)
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    Engineering Math - Complex Roots and Powers

    Thank you both for the explanations! You're my heroes.
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    Engineering Math - Complex Roots and Powers

    The r comes from converting x+iy (rectangular coordinates) to polar coordinates. x+iy=r(cos\Theta+isin\Theta)=rei\Theta As far as how r is used, I'm unsure. None of the problems I have been given/done have used that r at all.
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    Engineering Math - Complex Roots and Powers

    Homework Statement Evaluate the following in x+iy form. i3+i Homework Equations i=rei\Theta The Attempt at a Solution i=rei\frac{pi}{2} i3+i = i3*ii (-i)(ei2\frac{pi}{2}) =-ie-\frac{pi}{2} =-.2079i I understand how it all works out except \frac{pi}{2}. I can't figure out how...
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    Cart pushed up a ramp

    Fixed, I have no idea how I came up with ~10 meters... Thanks bud!
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    Cart pushed up a ramp

    Shameless bump.
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    Cart pushed up a ramp

    Homework Statement A cart is pushed up a ramp with an initial speed v0=2.5m/s. For this problem, you may assume that the cart is frictionless and the acceleration of the cart a=gsin\theta. A) If the angle of the ramp is \theta=20, what is the maximum distance d that the cart will travel up...
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    Trig - Can't rememeber Equation

    I knew it! Thanks for the help everyone... I guess I'm just over thinking things for a relatively easy project.
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    Trig - Can't rememeber Equation

    Okay I just did a little experiment and found dimensions and angles of this car I'm pushing. Basically this is the triangle that I drew here is what I'm pushing, only... in the form of a car. (point A and point B are the same points on both pictures.) I'm trying to find the equation that...
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    Trig - Can't rememeber Equation

    Okay, sorry. I drew a [very poor] picture to help illustrate what I'm trying to get at. The force at point A will be known but it will not equal the force at point B. There will be some angle (theta) that I will approximate. I know that there is a relation between the two points along...
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    Trig - Can't rememeber Equation

    I'm unsure if this should be in homework help or not... but... In Trig (over a year ago) I remember being taught a equation to find the force being applied (in this case) to the tires of a car when pushing it with "x" force at "y" height. Lo and behold, I need this equation for a project...
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    Use x^2+2 in the Difference Quotient

    ahh! okay.... x2+2xh+h2+2-x2-2 = x2+2xh+h2+2-x2-2 = 2xh+h2/h = 2xh+h2/h = 2x+h That is the answer I chose since it was closest to my answer. You guys rock, thanks!
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    Use x^2+2 in the Difference Quotient

    I took a placement test and blew it away. (I tested into calculus, best possible placement for this test.) Everything was rather simple except for this problem which I cannot seem to get right. Can someone show me where I'm going wrong here? Homework Statement Use x2+2 in the Difference...
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