also known as the y value so I could say y=2x or f(x)= 2x same thing just using functional notation
your next question is what is dependent and independent variables. I am Dyslexic but know math and which is which confuses me. but one can vary the x value while y depends on which x you use. also

Marc

enjoy your work and good luck

Marc

I actually wanted to ask another questions on sets if u dont mind please?

Inembo

I have so many questions on set and I really love dis app I never believed u would reply

Inembo

Hmm go ahead and ask you got me curious too much conversation here

Adri

am sorry for disturbing I really want to know math that's why
*I want to know the meaning of those symbols in sets*
e.g n,U,A', etc pls I want to know it and how to solve its problems

Inembo

and how can i solve a question like dis
*in a group of 40 students, 32 offer maths and 24 offer physics and 4 offer neither maths nor physics , how many offer both maths and physics*

Inembo

next questions
what do dy mean by (A' n B^c)^c'

Inembo

The sets help you to define the function. The function is like a magic box where you put inside stuff(numbers or sets) and you get out the stuff but in different shapes (forms).

Adri

I dont understand what you wanna say by (A' n B^c)^c'

Adri

(A' n B (rise to the power of c)) all rise to the power of c

Inembo

Ok so the set is formed by vectors and not numbers

Adri

A vector of length n

Adri

But you can make a set out of matrixes as well

Adri

I I don't even understand sets I wat to know d meaning of all d symbolsnon sets

Inembo

Wait what's your math level?

Adri

am having big problem understanding sets more than other math topics

Inembo

So f:R->R means that the function takes real numbers and provides real numer. For ex. If f(x) =2x this means if you give to your function a real number like 2,it gives you also a real number 2times2=4

Adri

pls answer this question
*in a group of 40 students, 32 offer maths and 24 offer physics and 4 offer neither maths nor physics , how many offer both maths and physics*

Inembo

If you have f:R^n->R^n you give to your function a vector of length n like (a1,a2,...an) where all a1,.. an are reals and gives you also a vector of length n... I don't know if i answering your question. Otherwise on YouTube you havr many videos where they explain it in a simple way

Adri

Actually you have 40 - 4 =36 who offer maths or physics or both.

Adri

I know its 20 but how to prove it

Inembo

You have 32+24=56who offer courses

Adri

56-36=20 who give both courses... I would say that

Adri

solution: In a question involving sets and Venn diagram, the sum of the members of set A + set B - the joint members of both set A and B + the members that are not in sets A or B = the total members of the set. In symbolic form n(A U B) = n(A) + n (B) - n (A and B) + n (A U B)'.

Mckenzie

In the case of sets A and B use the letters m and p to represent the sets and we have:
n (M U P) = 40; n (M) = 24; n (P) = 32; n (M and P) = unknown; n (M U P)' = 4

Mckenzie

Now substitute the numerical values for the symbolic representation
40 = 24 + 32 - n(M and P) + 4
Now solve for the unknown using algebra:
40 = 24 + 32+ 4 - n(M and P)
40 = 60 - n(M and P)
Add n(M and P), as well, subtract 40 from both sides of the equation to find the answer.

Mckenzie

40 - 40 + n(M and P) = 60 - 40 - n(M and P) + n(M and P)
Solution:
n(M and P) = 20

Mckenzie

Simpler form:
Add the sums of set M, set P and the complement of the union of sets M and P then subtract the number of students from the total.

Mckenzie

n(M and P) = (32 + 24 + 4) - 40
= 60 - 40
= 20

Mckenzie