Qualification > Math
[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !
astarmathsandphysics:
By squaring both sides you sometimes get superfluous solutions with don't satisfy the problem. See attachment.
cs:
--- Quote from: astarmathsandphysics on September 26, 2011, 09:25:54 am ---By squaring both sides you sometimes get superfluous solutions with don't satisfy the problem. See attachment.
--- End quote ---
oh thank you, so its best to draw a graph :)
astarmathsandphysics:
I think so. A quadratic has two solution (these may be the same) but one of them might not be a solution to the problem.
curiousguy:
Please help me these questions its really urgent
curiousguy:
Please help me with these questions its really urgent
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