exam Maths Puzzle Numerical Ability

Find the function value:

F(x) = x (to the third power)

f(-3) = _________

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exam Other Question

A strong spring is mounted to a steel I-beam so that the spring hangs vertically. A weight is hung from the spring. The energy P (arbitrary units) stored in the spring is give Logarithms:
a) Using a calculator, find log 1000 where log means log to the base of 10.

b) Most calculators have 2 different logs on them: log, which is base 10, and ln, which