Functions.1 (1 Viewer)

[rr.dun.dun]

x = -b/2a is the equation you're referring to ie the x value in the line of symmetry?

yes.

 

[rr.dun.dun]

No. That rule only refers to a quadratic function. It gives the x value for the maximum or minimum value.

Remember, you still have to subsitute this value into the original function to find the y value which is the actual maximum or minimum value.

For an exponential expression, there really isn't a maximum or minimum value. The function keeps increasing (to ∞) at one end and decreasing (approaches 0) at the other.

ah okay. thank you so much

 

[rr.dun.dun]

Does anyone know if I'm able to use this formula -

-b
2a

to find the mininum or maximum value, for not just the quadratic function but for the exponential one as well?

 

[Surf's zUp!!]

Does anyone know if I'm able to use this formula -

-b
2a

to find the mininum or maximum value, for not just the quadratic function but for the exponential one as well?

x = -b/2a is the equation you're referring to ie the x value in the line of symmetry?

 

[PC]

No. That rule only refers to a quadratic function. It gives the x value for the maximum or minimum value.

Remember, you still have to subsitute this value into the original function to find the y value which is the actual maximum or minimum value.

For an exponential expression, there really isn't a maximum or minimum value. The function keeps increasing (to ∞) at one end and decreasing (approaches 0) at the other.

 

[jess1990!]

i dropped from advanced to general earlier this year, and that formula is used to determine the point of symmetry.

e.g.

-b/2a finds the x value, and then u need to sub that x value into original function to find the y value and thus u have ur point of symmetry.