Homework Help: Discrete Math

Posted by yengiang on Saturday, May 7, 2011 at 3:39pm.

"The cube of every real number x is greater than or equal to x, and we can see that since 2^3=8>=2." ?

Is this a correct argument?

Discrete Math - drwls, Saturday, May 7, 2011 at 4:14pm
No.

Two is not "every real number", and showing it is true for 2 is not a general proof.

The conclusion is also not correct.

Answer this Question

Related Questions

7th grade math ms.sue - 4. Which statement is true? (1 point) Every real number ...
math - solv the inequality: 1. 7-3x [is less than or equal to] 22 ---> x...
Algebra - Find the domain of p(x)=x^+3 a) x is a real number b) x is a real ...
algebra - 4x = y > 6 does it make since if you put a line under &gt...
Math - You roll a blue number cube and a green number cube. Find P a number ...
math - would this be true 53 > 18 - 7x greater or equal to 25 subtract 18...
Pre-Cal - a red number cube and a white number cube are rolled. Find the ...
Discrete Math - Please help with this problem. Thanks a/ Show that for any real ...
math - describe the solutions of 4<or=n+2 mult. choice a all real numbers...
Discrete Math - Prove that if a and b are integers with a not equal to zero and ...

For Further Reading

First Name:
School Subject:
Answer: