Sujet: imaginary numbers liste de sujets
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20 articles trouvés pour ce sujet.

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	x^2 = -16		2016-12-12
		A student pose la question : x to the second power = -16 what number solves the equation? Penny Nom lui répond.
	I started with Euler's identity and manipulated it		2011-11-14
		anonymous pose la question : I started with Euler's identity and manipulated it e^i*pi=-1 e^-i*pi=(-1)^-1 e^-i*pi=-1 e^-i*i*pi=(-1)^i e^--pi=(-1)^i e^pi=(-1)^i type it in in a calculator and you get e^pi=23.1406926... and (-1)^i=0.0432139183... What did I do wrong? Robert Dawson lui répond.
	i^i		2010-11-21
		trale pose la question : Can we use e^ix=cosx+isinx for finding i^i like that: x= pi/2 => e^(ipi/2)=0+i then [e^(ipi/2)]^i=i^i.then we find i^i= 0,207879576.... is it true? can we give value for x for free?thank you. Harley Weston lui répond.
	A quadratic equation with imaginary numbers		2010-06-03
		Alissa pose la question : I am solving a quadratic equation and I got this far; (x-4+i)(x-4-i)=0 but how do I add the imaginary numbers i know you multiply x by x and then add -4 + -4 but what do you do with the i's? Penny Nom lui répond.
	Imaginary roots		2007-12-09
		Josh pose la question : What is the correlation between imaginary roots (of a quadratic or other polynomial equation) and the graph of the equation? As in, how can one represent imaginary solutions graphically (and why does that work)? Harley Weston lui répond.
	Simplifying complex denominators		2007-06-21
		Krys pose la question : How do I simplify completely? ((4+i ) / (3+i )) - ((2-i ) / (5-i )) Stephen La Rocque lui répond.
	The absolute value of imaginary and complex numbers		2006-12-11
		Keith pose la question : i don't get how to find the absolute value of imaginary and complex numbers here is an examples from the text book the answers are given but they don't show the work so i can follow along just show me the work please and explain how it is done problem 3+4i Stephen La Rocque and Penny Nom lui répond.
	how do i find i^22?		2006-06-12
		Sky pose la question : how do i find i22? Sky Stephen La Rocque lui répond.
	The square root of i		2005-11-30
		Kevin pose la question : If the square root of -1 is i, what is the square root of i? How can you find the log of a negative number? What is the log of -1? Claude Tardif lui répond.
	Real numbers		2003-05-09
		Sirena pose la question : what is a "real" number Penny Nom lui répond.
	The square root of i		2002-03-14
		Arlene pose la question : what is the square root of i, if i=x+yi? what is the square root of 1-i? i'm getting problems like these in which I do not understand. Harley Weston lui répond.
	eix = cosx + isinx		2001-10-10
		Peter pose la question : Given: eix = cosx + isinx substitute -x for x to find e-ix, simplifying your answer use the given and part a to find an identity for cosx making no reference to trig functions find an identity for sinx . . Penny Nom lui répond.
	A complex calculation		2000-11-24
		Angie pose la question : Multiply (3-2i)2=32-2(3)(2i)+(2i)2 Penny Nom lui répond.
	Powers of i		2000-05-24
		Paul Fieldhouse pose la question : What is the result of raising i to the googol power? is there a rule or pattern to raising i by increasing powers of 10? Penny Nom lui répond.
	The square root of -1		2000-05-19
		Gary pose la question : i am not a student i am just some one that heard something and i can't be sure on the answer...my ? is what is the square root of -1? i think it is -1 but not sure can you let me know please thank you Harley Weston lui répond.
	root(-1)* root(-1)		2000-03-20
		Michael Moran pose la question : i squared = -1 but i squared = root(-1)* root(-1) = root( -1*-1) = root(1) = 1 -1 doesn't = 1 can you help me with my question Claude Tardif lui répond.
	Complex numbers/polar coordinates		1999-03-25
		Kate Cegelis pose la question : What is the relationship between complex numbers and polar coordinates? Harley Weston lui répond.
	Complex numbers and the quadratic formula		1998-12-25
		Richard Peter pose la question : My age is 16, and my name is Richard. My question relates to the topic complex numbers & the quadratic formula. I would like to know how to solve quadratic equations in which the discriminant is less than 0 (i.e. we get two complex solutions to the quadratic) 3x2+2x+5 = 0 and how mathematicians like euler contributed to this field. If it would be possible I would also like to know how this type of quadratic equations can be graphed? Harley Weston lui répond.
	Complex Numbers		1998-12-23
		Wayne Bagley pose la question : I would like to know what is the square root of i , and i squared? I am looking for a response appropriate for secondary level students. Harley Weston lui répond.
	Multiplying imaginary numbers.		1997-11-03
		Jim Catton pose la question : Here is the question: (square root -2) x (square root -8) My algebra suggests two possibilities . . . Walter Whiteley, Chris Fisfer and Harley Weston lui répond.

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