Please help me :(
1. A local min of y=x^3+2s^2-1 is?
2.The y-intercept of y=x^3+2x^2-1 is ?
3.The y-intercept of y=x^2+4x-2

Question

Please help me :(
1. A local min of y=x^3+2s^2-1 is?
2.The y-intercept of y=x^3+2x^2-1 is ?
3.The y-intercept of y=x^2+4x-2

campbell_st · Answer

so in the 1st equation is it 

$$y = x^3 + 2x^2 - 1$$

directrix · Answer

2.The y-intercept of y=x^3+2x^2-1 is ?

Substitute 0 for x in the above equation and crank out the value of y for the y-intercept.

directrix · Answer

3.The y-intercept of y=x^2+4x-2

Do the same here as for number 2.

Suggestion: Check and see if #2 or #3 asked for the x-intercept, okay?

directrix · Answer

Is there supposed to be an "s" in this polynomial with the x^3 ?

1. A local min of y   =    x^3   +2  s^2   -  1