How best to get a grade of 4 in a math test?
Hello,
I have a math test on Friday and I can't do anything.
The following topics are covered:
Intersection points of parabolas with coordinate axes
position of parabolas and straight lines
setting up parabola equations.
drawing polynomial functions and sketches
Symmetry and global progression.
It would probably be best to focus on a few topics to get to 4. I would be grateful if you could tell me what you think would be most worthwhile, i.e., how it would be feasible.
thanks in advance
(No Ratings Yet)
Loading...
That’s too bad. You really have to do something else.
Let’s go through the points of your listing:
intersections of parabolas with coordinate axes.
This is so simple that the corresponding task should actually save everyone from Note 6. The intersections of a parabola with the x axis are precisely the real zeros. There are either 2 or 1 or none for the parabolic. The point of intersection of a parabola with the y-axis is obtained by inserting into the parabola equation for x the value 0. There is always exactly one intersection with the y axis.
Location of parabolic and straight lines.
The location of parabola is primarily about the fact that the parabola is open up or down. You read this in the normal form at the sign of x2. Positive sign means opening up, negative sign means opening down. When asked by which quadrants a parabola goes, a sketch helps and for the production of the sketch again the knowledge of the zero points (= intersections with the x axis)
Straight lines often concern the question whether the straight line rises or falls and you can also read this from the normal form. It is about the value of the blessing, that is, by the factor of the reknown x. Positive segregation stands for an ascending straight line, a negative gradient for a falling straight line. When asked, through which quadrants a straight line runs, a sketch again helps and for the sketch you only need the zero point and the intersection with the y axis.
In the further sense, the topic “Lage of parabolas and straight lines” can also include the question whether a given straight line intersects a given parabola. Check your teaching material and find out whether the calculation of the intersections of a parabola with a straight line belongs to the fabric. If this is part of the fabric, you need to know that for solving the task you equalize the normal shapes of straight line and parabola. The square equation obtained gives you the x values of the intersections. The associated y values are obtained by inserting the x value into the straight line equation or into the parabola equation. It must come out of the same in both sets.
Setting up parabolic equations:
This is occasionally tricky because many different tasks are possible.
The general parabola equation is
For a certain parabola, you must therefore determine values for the three unknowns a, b, c. To do this, you need three points on the parabola so you can set up a equation that you need to solve. The equation has the three unknowns a, b, c This is a pretty computer. The task becomes easier if you have additional information. For the normal parable a has the value 1, therefore, only b and c remain to be calculated. A has the value -1 for the normal parable opened down. For a parabola passing through the origin of the coordinate system, c has the value 0.
It is quite possible that in a work there is any special case that can be solved with a system of equations with two unknowns or even more easily. A popular special case is that two zeros and another point are given.
Drawing of polynomial functions.
Here is a value table. It is always useful to record the x values -1, 0 and 1 in the value table. The calculation of the associated y values is particularly simple for these values. Then you can consider which small x values you can still need associated y values. If you are to draw a parabola for which you have already calculated the intersections with the coordinate axes, you will of course use these values because they are available without further invoice.
Symmetry and Global History
In the case of symmetry, a distinction must be made between axis symmetry and point symmetry For both types of symmetry there are rules that allow to recognize the symmetry. You have to be able to use these rules and practice them. A sketch helps to control.
thank you very much for the effort and honest criticism to appreciate it.
stay healthy and beautiful day still
I think you can learn all this quickly and easily if you understand a little math. Look at some YouTube videos and after about 2 hours you can do it all rough.
Personally, I would say that global development and symetry can be queried in many tasks and is therefore the most relevant. Recognizing symmetry is very easy and to determine the global course you should be able to show after a few exercises even without problems. That’s not even true.
Polynomial functions for drawing/scizzing is probably the easiest of the things you have listed and should also be a task. In my opinion, are free points.
I can’t fully understand the first issue, so I can’t tell you about it.
Doesn’t know what class you’re going to, but if you’ve been careful in the previous works, you’ll be easy to master. Parabels are Easy👍
Thank you very much. Stay healthy
In the first topic, certain points or other points and then the points of intersection are. Calculate
Hav’s now looked at 1 hours and I had quite roughly understood it, but not as hard as I thought
It’s hard to say. You do not know how many tasks come from the names and how they are scored. Maybe you should watch and learn better at school. If you have problems with this, maybe even talk to a teacher how to help you.
I have priorities in life, despite my math note, have cut a 1.9 and many other good things I don’t tell you so people like you don’t feel bad
Why would I feel bad? I’m 38, happy married, having a child, a house and no debt. What more do you want?! You asked something and I gave you a normal answer, not a reason to be patty.
Understand your point, got it wrong, see my mistake. Stay healthy and your family.
Then it’s good if anything else is good with you. My answer was in no way mean evil or declining. Since you wrote that you can’t do anything, I assumed it’s generally bad in math. That’s why I meant that if you have problems with learning, if you don’t get help. It wouldn’t be a bad thing if it were.
I’m not patty, I just don’t like it when the school is so high, because it’s never gonna bring me to my goal. In addition, I am ahead of people at my age in almost all areas of life, which is what it has just scratched on my ego. I am 18 in physically very good form, sixpack, can fight, financially in good shape and my mindset etc just good at it I am proud
You get into the car with your parents and drive to my town. There you organize a hotel with a “working room”. In this we will be holding 8 h/day. Then you can all themes!