It can be really hard to figure out the math, sometimes. Someone missed it back in school, someone forgot what they once understood, and at university it becomes extremely difficult to cope with the tasks of higher mathematics. The “mountains” of formulas, integrals, calculating derivatives and other “charm” of the program are terrifying. You can often feel like a complete “kettle” when you’re figuring it out.
In many cases, the “write off the neighbour” method works. But there are 2 “buts”: 1. classmates and classmates, often do not know how to solve the tasks themselves, so there is no one to cheat; 2. it will not help you at the exam and control, because there you will have your own personal ticket with the tasks to be solved.
What should I do? Is gre hard?
The very first advice, if you are studying at university, is to attend lectures and take notes. Even if you don’t understand anything at the lecture itself, the recorded topics and formulas will give you a chance to sort it out at home, or at least present a summary of the exam to the lecturer. Believe me, having a synopsis significantly increases your chances of taking the exam, even if you know very little.
If at home, looking at the math book and notebook, you also feel like a “kettle”, the most correct decision would be to go to a tutor, preferably an online tutor. Because, firstly, it is cheaper, secondly, you can explain the topics and how to solve individual tasks at almost any time of day, and it is very convenient. Experienced online tutors on the above, probability theory and mathematical statistics can be found here. If you need help on a school mathematics course, we advise you to go straight here.
But the most important advice, which will definitely help you in a difficult situation with mathematics – master the minimum! If you can’t give the right answer to the question “What is the sum of squares of rectangular triangle catheters” (and it is equal to the square of hypotenuse), then most likely you will not even “pull” further. Therefore, it is important to remember the basic rules, algorithms and formulas that teachers ask on the exam, or give on the control. A good math tutor, or, in the case of students, a higher math tutor, can also help you to master the necessary minimum.
From the basic one, let’s remember the bracketing rules:
…+ (-a+b+c-d) = -a+b+c-d – If there is a plus sign in front of the brackets, we can simply omit the bracket and leave each value with the same sign as it stands.
…- (-a+b+c-d) = a-b-c+d- If there is a minus sign before the parentheses, then by omitting the parentheses we change the sign of each value (there was a minus sign, so after opening the parenthesis there will be a plus sign, and vice versa).
Even if you suddenly get it mixed up in a written exam paper and the examiner points out an error, you can quickly voice the rule and say that you were just nervous and wrote incorrectly. It’s much better than keeping your eyes down when you’re asked, “Where is the mistake? Is gre hard?
The same rule is valid for multiplication.
a(b-c) =ab-ac- Before “a” there is no minus, which means the signs are saved.
-a(b-c)=ab+ac- There is a minus sign before “a”, which means that we must change the sign when opening the brackets.
In general, it is important to remember that two Minusa give the PLUS and three Minusa give the MINUS. The main thing is not to get confused in this when solving problems in higher or even school mathematics.
Further we will consider the conversion of such syllables.
When looking at such examples, it is important to remember that you can only subtract and sum up values that have the same variables and degrees. That is, you can subtract 9 ax from 5ax, but you can’t just subtract 9ax2 (because x has a different degree), or you can’t add 9yz because other variables are involved.
Speaking of degrees. A lot of people are scared of them in vain, because in fact it is a usual multiplication of a number by itself.
How do you solve fractions?
Actually, they’re pretty easy to deal with, too. It is important to remember the simple rule that you can only add and subtract fractions with the same denominator.
It is very important to remember that we are doing Multiplication or DIVISION, and then we are doing MANUFACTURING and CONTRIBUTION. That is, in our example it would be an extremely gross error to multiply 5 by 8 and add 7 at once. It is correct to multiply 5 by 8 first, then multiply 7 by 6. And only then add up the obtained results!
Multiply all the fractions according to the principle: multiply numerator by numerator, multiply denominator by denominator.
You can see how to solve the percentage tasks here.
Free gre online practice tests math knowledge.
Of course, it is difficult to cover all the necessary things in at least one article, so it is better to take at least a couple of lessons with a tutor, especially before tests and controls. Mastering the basic material, of course, will help you gradually master math, successfully write tests and pass exams.