Math Chapter Wise question with answer

Q01 Let f: R → → → R be the function defined by 1 f(x) 2 cos x for all x R, Then the range of f is– English · SECTION B PGT TIER-I 31.11.2014 TGT KVS 2017 Q02 Let function f: R R → → be defined by ((()) f x 2x sin x = + = + for all x R, ∈ Then f is– English · JDD-75-PGT TIER II-X-15 28.06.2015 Q03 Let f: N→Y be a function defined as f (x) = 4x+3, where Y = {y: y = 4x+3 for some x∈N). The inverse of f (x) is English · TGT 2010 Q04 Let R be the set of all real numbers. Then f:R→ → →R is not a mapping if it is defined by: English · PGT 2013 Q05 Let a relation R be defined on the set of all real numbers by aRb if and only if 1+ab>0. Then the relation R is– English · UP PCS (Pre) 2004 & 2005 Q06 If R be the set of all real numbers and let f:R→ → →R be defined by f(x)=x2. Then f is: English · UP PCS (Pre) 1997