Given the function f (x) = x + 1 + X-1 (1), draw the image of F (x) (2) write the minimum value of F (x) according to the image

Given the function f (x) = x + 1 + X-1 (1), draw the image of F (x) (2) write the minimum value of F (x) according to the image

From the image, the minimum value is 2

The graph of function f (x) = X-2 x-3 is drawn and its monotone interval is pointed out

In fact, it's very simple. We notice that this function is actually an even function, so we just need to draw the part of x > = 0, and then take the Y axis as the symmetry axis. In the past, we can draw the quadratic function image. Can we draw the graph? Can we solve everything?

How to draw even function, odd function and various function images? For example, how to draw the function image of F (x) = X-1

When X-1 & gt; 0 & nbsp; i.e. X & gt; 1 & nbsp; f (x) = X-1 when X-1 & lt; 0 & nbsp; i.e. X & lt; 1 & nbsp; f (x) = 1-x