ENG EK 127 Midterm: EK127 Exam 1 Ref Sheet

• School: Boston University
• Department: Engineering Core
• Course: ENG EK 127
• Professor: Stormy Attaway

Document Summary

For scalars, xor 1 only if one is true]. Loose/compact(>>format loose): controls line spacing arg is true(any non-0 #), all true only if everything is true, find finds els for which an expression is true and returns their indeces, isequal(v1,v2) compares 2 arrays. Int8, int16, int32, int64 store that many bits(8 bits=1byte) & sign. Type int32 when integer is required, type char is used to store either single characters or strings, logical is used to store true(1)/false(0) values [and && or|| inf, ~=, nan(not a #) In order to multiply matrices, must have same inner dims. Scalar multiplication >>[4 0 11]*3 = 12 0 33. (same w addition) Logical vec/mat returns values where corresponding els were true. False creates mat of false(log 0) vals, true(creates mat of true(log 1) vals, any returns true if anything in input. Rand uniformly distributed real #s in interval (0,1), randn real number in interval (0,n), rand*10 a result in the open interval (0,10)