Mrinmayee's answer to Vignesh anand's Secondary 3 A Maths Singapore question.

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Mrinmayee
Mrinmayee's answer
2 answers (Tutor Details)
1st
From the picture you can see that the y intercept will always be c/2. When c is greater than -2, the y intercept will increase, and you can imagine the straight line going up, so it will never intersect the graph y=ln x. So when c>-2, there is no solution.