Let f (x) = ax ^ 2 + BX + C. if f (x) = - 1 is an extreme point of F (x) e ^ x, then the following image cannot be the image of y = f (x)? There are 4 pictures, because the level is too low to upload pictures, A. Open up parabola, vertex at (- 1,0), intersects with the positive half axis of y-axis B. open down parabola, vertex at (- 1,0), intersects with the negative half axis of y-axis C. open down parabola, vertex in the first quadrant, intersects with the negative half axis of y-axis (two intersections with X-axis) D. open up parabola, vertex in the third quadrant (two intersections with X-axis)

Let f (x) = ax ^ 2 + BX + C. if f (x) = - 1 is an extreme point of F (x) e ^ x, then the following image cannot be the image of y = f (x)? There are 4 pictures, because the level is too low to upload pictures, A. Open up parabola, vertex at (- 1,0), intersects with the positive half axis of y-axis B. open down parabola, vertex at (- 1,0), intersects with the negative half axis of y-axis C. open down parabola, vertex in the first quadrant, intersects with the negative half axis of y-axis (two intersections with X-axis) D. open up parabola, vertex in the third quadrant (two intersections with X-axis)

If we know that - 1 is an extreme point of F (x) e ^ x, we know that the derivative of F (x) e ^ x is less than zero. If e ^ x is always greater than zero, then f (x) + F (x) derivative is less than zero. If f (x) derivative = 2aX + B, then f (x) + F (x) derivative = ax ^ 2 + (2a + b) x + C is less than zero