Sujet: imaginary liste de sujets
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36 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 Squared Number That's Negative		2010-09-22
		David pose la question : What is the only number that when it's squared becomes negative? Stephen La Rocque 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.
	Zeros of a polynomial		2010-03-01
		Gavin pose la question : Suppose the polynomial R(x) = a_9x^9+a_8x^8+...+a_1x+a_0 has real coefficients with a_9≠0. Suppose also that R(x) has the following zeros: 2, 3, i Using this info, answer the following. a. What is another zero of R(x)? b. At most how many real zeros of R(x) are there? c. At most how many imaginary zeros of R(x) are there? p.s. I used _ for subscript thanks so much Harley Weston lui répond.
	Factor 9x^2 + 6x + 4		2008-11-21
		Jonah pose la question : how can i solve this by factoring: 9x^2 + 6x + 4 Harley Weston lui répond.
	Real and imaginary zeros		2008-11-12
		David pose la question : Find all the real and imaginary zeros for each polynomial. Factor each polynomial. Leave factors with imaginary zeros in quadratic form. h(x)= x^5 +2x^4 - 10x^3 -20x^2 +9x + 18 Harley Weston lui répond.
	A quadratic		2008-10-27
		Giselle pose la question : 3x squared minus 2x equals -5 Penny Nom lui répond.
	A quadratic equation		2008-06-03
		Drew pose la question : A solution of x^2-8x=-17 is -4 or -4+I or 4 or 4+i Janice Cotcher lui répond.
	A complex quadratic		2008-02-18
		Ash pose la question : z^2-(6+2i)z+(8+6i)=0 Solve for Z Steve La Rocque and 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.
	A graph with certain properties		2004-11-22
		A student pose la question : i was asked as a question in coursework to sketch the graph with the following characteristics: a double root at -3 a pair of imaginary roots an x-intercept at 6 a root at 4 which is not a double root Penny Nom lui répond.
	Imaginary roots of a ploynomial		2004-10-31
		Jennifer pose la question : how to find the roots of a polynomial equation if it would be imaginary? Harley Weston lui répond.
	(a+b) + 5i = 9 + ai		2004-06-25
		Josh pose la question : The question which someone gave you (a+b) + 5i = 9 + ai question) gave me trouble. Penny Nom lui répond.
	3+4i abd |3+4i|		2004-06-17
		Sandy pose la question : how would you do a question like |3+4i|? is that different than just doing 3+4i? Penny Nom lui répond.
	Real numbers		2003-05-09
		Sirena pose la question : what is a "real" number Penny Nom lui répond.
	a+b=10 and ab=40		2002-04-27
		April pose la question : What two numbers add to ten and multiply to forty? (a+b=10, a*b=40) I think the answer includes radicals and/or imaginary numbers. 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.
	Some complex problems		2001-01-15
		Nick pose la question : I am having enormous difficulty with one question in my maths homework. The question is shown below. If anybody out there can find the answers and show the workings and help me to understand. Harley Weston 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.
	The magnitude of a complex number		2000-11-11
		Jeremy pose la question : Recently, we started studying how to graph complex numbers. Our math teacher said to use what would normally be the x-axis as the real-axis and to use the y-axis as the imaginary-axis. However, when he started talking about how to calculate magnitude, that's when I became confused. For instance... Walter Whiteley 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 Roots		2000-01-24
		Jess Rutherford pose la question : How do I find the value of k when 5x2 + k = 3x and has complex roots ? Penny Nom 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.
	How do you raise a number to an imaginary/complex power?		1996-07-03
		Andy Golden pose la question : How do you raise a number to an imaginary/complex power? I know how you raise "e" to a complex power, like e^(pi*i): cos pi + i * sin pi But what about numbers other than "e"? What if I want to raise 5 to the 2i power? How is that done? Chris Fisher lui répond.

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