Projective camera can be described by a linear-fractional function f : < 3 ! < 2 as: f(x) = 1 ct x + d (ax + b); dom f = fx : ct x + d > 0g; with a 2 < 23; b 2 < 2 and rank a ct = 3: essentially, the domain of f consists of points in front of the camera. the 34matrix p = a b ct d ; is called the camera matrix and has rank 3. since f is invariant with respect to scaling, i. e., it does not change if we were to replace a; b; c; d with ka; kb; kc; kd for any constant k 6= 0, we can normalize the parameters and assume that kck2 = 1. the number ct x+d is then the distance of the point x from the plane fz : ct z + d = 0g. this plane is called the principal plane. the point xc = a ct b d

answertrue;

a) click on any cells in the range of data

b) click the data

c) click sort& filter group, click sort

d) select the column to sort by and then select a sort order

e) select the next column to sort by and select the sort order

f) click ok

a  social news website  is an  internet  website  that features  user-posted stories. such stories are ranked based on popularity, as voted on by other users of the site or by website administrators. users typically comment online on the news posts and these comments may also be ranked in popularity. since their emergence with the birth of  web 2.0, social news sites have been used to link many types of information, including news, humor, support, and discussion. all such websites allow the users to submit content and each site differs in how the content is moderated. on the  slashdot  and  fark  websites,  administrators  decide which articles are selected for the front page. on  reddit  and  digg, the articles that get the most votes from the community of users will make it to the front page. many social news websites also feature an online comment system, where users discuss the issues raised in an article. some of these sites have also applied their voting system to the comments, so that the most popular comments are displayed first. some social news websites also have a  social networking  function, in that users can set up a user profile and follow other users' online activity on the website.

answer

true

explanation

stem(science, technology, engineering and math)   skills in every career. for example, to operate a business, you require stem skills to provide estimates to customers, prepare budgets and promote business online. the stem careers that are currently in high demand are application software developers, market research analysts, civil engineers, industrial engineers, electrical engineers, and family and general practitioners.