Boy Mow Chau's answer to V's Junior College 1 H2 Maths Singapore question.
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answer for part (ii)
when the question says use algebraic method, it means need to rearrange the given equation as a quadratic equation in x, and find for what range of values of y does this quadratic equation not have any real roots.
since the question asks for exact values of y, we leave the answers in exact form, instead of changing to decimal values.
when the question says use algebraic method, it means need to rearrange the given equation as a quadratic equation in x, and find for what range of values of y does this quadratic equation not have any real roots.
since the question asks for exact values of y, we leave the answers in exact form, instead of changing to decimal values.
Date Posted:
4 years ago
the question asks for the exact set of values of y, means answer should give in set notation form.
the answer 1 - sqrt(7)/4 < y < 1 + sqrt(7)/4 is in range form.
in set notation form, answer should be …
{ y E R : 1 - sqrt(7)/4 < y < 1 + sqrt(7)/4 }
where E is the symbol for "is a member of"
and R is the set of real numbers.
the answer 1 - sqrt(7)/4 < y < 1 + sqrt(7)/4 is in range form.
in set notation form, answer should be …
{ y E R : 1 - sqrt(7)/4 < y < 1 + sqrt(7)/4 }
where E is the symbol for "is a member of"
and R is the set of real numbers.
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