Difference between revisions of "009A Sample Final 2, Problem 7"

Revision as of 19:29, 17 February 2017

Show that the equation $x^{3}+2x-2=0$ has exactly one real root.

Solution:

(a)

Step 2:

(b)

Step 1:

Step 2:

(c)

@@ Line 1: / Line 1: @@
-<span class="exam">Compute
+<span class="exam"> Show that the equation <math>x^3+2x-2=0</math> has exactly one real root.
-::<span class="exam">a) <math style="vertical-align: -14px">\lim_{x\rightarrow 4} \frac{\sqrt{x+5}-3}{x-4}</math>
-::<span class="exam">b) <math style="vertical-align: -14px">\lim_{x\rightarrow 0} \frac{\sin^2x}{3x}</math>
-::<span class="exam">c) <math style="vertical-align: -14px">\lim_{x\rightarrow -\infty} \frac{\sqrt{x^2+2}}{2x-1}</math>
 {| class="mw-collapsible mw-collapsed" style = "text-align:left;"