Functions Flashcards
What is the domain?
What goes into the function (typically x)
What is the codomain?
What can come out of the function (typically y)
What is the range of a function?
What actually comes out of the function f(x)
What is the sign of a function?
What tells us whether a function is positive, negative or 0
What is a continuous function?
Function with no jumps/gaps
What is a discontinuous function?
Function with jumps/gaps
What is the global maxima of a function?
The max value of the totalfunction
What is the local maxima of a function?
The max value within a range
What is the global minima of a function?
Minimum for entire value of function
What is the local minima of a function?
Minimum within a range
What is an increasing function?
Where increasing x increases y
What is a decreasing function?
Where increasing x decreases y
Equation of a straight line
y=mx+b
m=slope
b=y intercept
Formula for gradient
rise/run=(y2-y1)/(x2-x1)
When lines are perpendicular, how are their gradient compared to each other
negative inverse, ma= -1/mb
