Maths-
General
Easy

Question

If the vectors a with not stretchy bar on top equals open parentheses c log subscript 2 space x close parentheses ı with not stretchy bar on top minus 6 ı with not stretchy bar on top plus 3 k with not stretchy bar on top and b with not stretchy bar on top equals open parentheses log subscript 2 space x close parentheses ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus open parentheses 2 log subscript 2 space x close parentheses k with not stretchy bar on top make  an abtuse angle for any x element of left parenthesis 0 comma straight infinity right parenthesis, then C belangs to

  1. open parentheses 0 comma 4 over 3 close parentheses
  2. open parentheses negative 4 over 3 comma infinity close parentheses
  3. open parentheses negative 4 over 3 comma 0 close parentheses
  4. open parentheses negative infinity comma negative 4 over 3 close parentheses

The correct answer is: open parentheses negative 4 over 3 comma 0 close parentheses

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