Question about Casio FX991ES Scientific Calculator
If the quadratic equation has no roots, you cannot find the roots. The discriminate is negative, so if we attempt to use the quadratic equation, we get no roots.
For example, y=x^2 +0x + 3
a=1, b=0, c=3
(-b+/- sqrt(b^2 -4ac))/2a
Substituting in the numbers, we get
x= (-0 +/-sqrt(0^2 - 4(1)3))/2
x= (0 +/- sqrt (-12))/2
We cannot do the square root of -12. Therefore, there are no roots. This is the same as having no x-intercepts. The discriminant is b^2-4ac. In this case it is -12. Thus, there are no real roots.
However, you can still determine the maximum or minimum, the vertex, the axis of symmetry, the y-intercept and the stretch/compression. With this information you can graph the equation.
In this case, the y-intercept is 3, the vertex is at (0,3), the axis of symmetry is x=0, the minimum value of the function is 3.
Let me know if you have any questions.
Posted on Nov 05, 2015
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
May 28, 2014 | Casio Office Equipment & Supplies
May 02, 2014 | Casio fx-300ES Calculator
Dec 20, 2012 | Casio FX-115ES Scientific Calculator
May 11, 2011 | Casio FX-115ES Scientific Calculator
Feb 11, 2011 | Texas Instruments TI-30XA Calculator
Sep 27, 2009 | Casio fx-300ES Calculator
Jun 26, 2009 | Sharp EL-531VB Calculator
May 17, 2009 | Sharp EL-531VB Calculator
May 05, 2009 | Sharp EL-531VB Calculator
162 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: