exam
Maths Puzzle
Numerical Ability
Determine whether the graph of 2 equations are perpendicular.
y=3X-7
4Y=3-x
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exam Other Question
PLease help me check if I simplified:
a-8b/a+b+ a+13b/ a+b original problem
my answer-- 2a-5b/a+b
2. Suppose y=100-5x and z=x(y-1)
Δy/Δx=?
∂z/∂x=?
∂z/∂y=?
Δz/Δx=?