The absolute value of a number a is represented as |a| and is the positive numerical value of a irrespective of the sign of a. Thus, if a=−2,|a|=|−2|=2. Note that this is also the absolute value of the number 2.
Prove that cos(sin^{-1} x) = square root (1 - x^2). Prove that cos(sin^{-1} x) = square root of {1 - x^2} . Suppose that the number, ''z,'' is imaginary. Is the number, ''zi,'' real? (if i=radical -1)
2016-10-09 Practice questions on solving inequalities where you have to graph a parabola, and integrating sin2xsin2x and cos2xcos2x2016-10-08 Practice questions on log laws2016-10-07 Practice questions on graphing the derivative, solving for an exponent, motion terminology: velocity, ...
an=2Aπ2∫0πxcos(nx)dx=2Anπ2[xsin(nx)]0π−2Anπ2∫π0sin(nx)dx ...well you get the idea its taking me too long to type out the entire solution so i will leave it at that. Can someone also please tell me why there is a 2Aπ2 term on the a0 and an ...
e^ιπ=-1. Now, taking multiplication (-1)(-1)=e^ιπ e^ιπ. This implies (-1)(-1)=cos 2π+ ι sin 2π= +1. In the same way, one can show that (-a)(-a)=a^2 This proves that “negative” multiplied with “negative” is “positive” ...
In short:using CVX incorrectly is actually worse (for you!) than not using it at all. The first thing we must ask you is this: Is your model convex? No, my model is not convex. You should not be trying to use CVX.CVX is not a general purpose optimization framework. It is designed...
Project b onto the columns space of A by solving A^{T}A\hat{x}=A^{T}b and p=A\hat{x} A=\begin{bmatrix} -1 &1 \ 1& -2\ 0&0 \end{bmatrix} Find the inverse of the statement q \rightarrow r What Is R-Squared? Why cannot we use the powerset as the sample space? So...
There is evidence of an improvement in the explanation of the total explained variance, which increases from 55.28% to 62.37%. The underlying structure of five factors is maintained. However, when adding the squared loadings of the rotation, each factor exceeds 10% of the explained variance. In...
Keywords: smart card data; individual mobility; urban analytics; big data; social media 1. Introduction Understanding urban flows and dynamics is important for uncovering hidden knowledge in spatial and social systems. For example, Batty [1] argues that cities are built around flows of money, ...