0 votes 0 votes The function $f(x)=ax+b$ is strictly increasing iff $(A)a>0$ $(B)a<0$ $(C)a\geq 0$ $(D)a \leq 0$ Why not $C?$ $a\geq0?$ Calculus engineering-mathematics calculus virtual-gate-test-series + – Purple asked Feb 1, 2016 edited Apr 2, 2019 by Lakshman Bhaiya Purple 394 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 4 votes 4 votes for strictly increasing f'(x)>0 f'(x)=a so a>0 Pooja Palod answered Feb 1, 2016 selected Feb 1, 2016 by Purple Pooja Palod comment Share Follow See all 0 reply Please log in or register to add a comment.