exam
Maths Puzzle
Numerical Ability
why is a negative number times a negative number equal to a positive number?
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exam Other Question
Hi! I need help solving the following equation.
2x+y=10
x^2+y^2=25
Thanks so much
The function y=3^x has been transformed to y=2*3(^-1/2x-1)+8. What is the mapping rule for the image of y=3^x??? I think the answer might be (x,y):(-2x+1,1/2y-8) . Can someone plea