exam
Maths Puzzle
Numerical Ability
18. Determine which two equations represent perpendicular lines.
(a) y = x - 3
(b) y = 5x -
(c) y = x +
(d) y = x
A) (a) and (b)
B) (b) and (c)
C) (a) and (d
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exam Other Question
please help
simplify
(3x^-2y)(2x^-3y^-2)
Prove that this equation is an identity:
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(sinx + cscx)² + (cosx + secx)² º</font> tan²x + cot²x + 7</PRE>