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Depending on the domain and range, the inverse may or may not be defined.
Assuming it is defined, the inverse function can be derived as follows:
The negative parabola is y = -ax2 + bx + c (where a>0)
so that -ax2 + bx + c - y = 0
using the quadratic formula,
x = [-b ± sqrt(b2 + 4*a*(c-y)]/(-2a)
which is a square root function, and will be real provided that b2 + 4*a*(c-y) > 0
What else can I help you with?
How do you tell if a quadratic function is minimum value or a maximum vale?
Standard notation for a quadratic function: y= ax2 + bx + c which forms a parabola, a is positive , minimum value (parabola opens upwards on an x-y graph) a is negative, maximum value (parabola opens downward) See related link.
What is the relationships between inverse functions?
The inverse of the inverse is the original function, so that the product of the two functions is equivalent to the identity function on the appropriate domain. The domain of a function is the range of the inverse function. The range of a function is the domain of the inverse function.
If an inverse function undoes the work of the original function the original function's becomes the inverse function's domain?
The original function's RANGE becomes the inverse function's domain.
What is the inverse of a cubic function?
The inverse of the cubic function is the cube root function.
The equation below describes a parabola. If a is negative which way does the parabola open y ax2?
Down
Give an example of a relation that is a function but whose inverse is not a function?
An example of a relation that is a function but whose inverse is not a function is the relation defined by the equation ( f(x) = x^2 ) for ( x \geq 0 ). This function maps each non-negative ( x ) to a non-negative ( y ), making it a valid function. However, its inverse, ( f^{-1}(y) = \sqrt{y} ), does not satisfy the definition of a function when considering the entire range of ( y ) values (since both positive and negative values of ( y ) yield the same ( x )). Thus, the inverse is not a function.
What is the general shape of a graph of a quadratic function in the form yax2 c?
y = ax2 + c is a parabola, c is the y intercept of the parabola. It also happens to be the max/min of the function depending if a is positive or negative.
What is the absolute value function?
It is a function that leaves all non-negative values unchanged but changes all negative values to their additive inverse (that is, their positive equivalent).
How do you tell if a quadratic function is minimum value or a maximum vale?
Standard notation for a quadratic function: y= ax2 + bx + c which forms a parabola, a is positive , minimum value (parabola opens upwards on an x-y graph) a is negative, maximum value (parabola opens downward) See related link.
What is the relationships between inverse functions?
The inverse of the inverse is the original function, so that the product of the two functions is equivalent to the identity function on the appropriate domain. The domain of a function is the range of the inverse function. The range of a function is the domain of the inverse function.
Is the inverse of an exponential function the quadratic function?
No. The inverse of an exponential function is a logarithmic function.
If an inverse function undoes the work of the original function the original function's becomes the inverse function's domain?
The original function's RANGE becomes the inverse function's domain.
What is the inverse of a cubic function?
The inverse of the cubic function is the cube root function.
What is the inverse function of -6?
-6 is a number, not a function and so there is not an inverse function.
Is a square root function the inverse function of a quadratic function?
Yes, the square root function is considered the inverse of a quadratic function, but only when the quadratic function is restricted to a specific domain. For example, the function ( f(x) = x^2 ) is a quadratic function, and its inverse, ( f^{-1}(x) = \sqrt{x} ), applies when ( x ) is non-negative (i.e., restricting the domain of the quadratic to ( x \geq 0 )). Without this restriction, the inverse would not be a function since a single output from the quadratic can correspond to two inputs.
When is the inverse of a itself a function?
Since the inverse of a function is it's reflection over the line x=y, which has a slope of 1. The only way a function can be It'a own inverse is if it is a liner function whose slope is perpendicular to the line. Since a perpendicular line is any line with the negative recoprocal of the slope, any linear function whose slope is -1 will be it's own inverse. - stefanie math 7-12 teacher
What do you notice the shape of the graph x of the quadratic function yax2?
The shape of the graph of the quadratic function ( y = ax^2 ) is a parabola. If the coefficient ( a ) is positive, the parabola opens upwards, while if ( a ) is negative, it opens downwards. The vertex of the parabola is its highest or lowest point, depending on the direction it opens. The axis of symmetry is the vertical line that passes through the vertex, dividing the parabola into two mirror-image halves.
