s66821
can someone show me the steps solving this inequality? 2a^3+2>0



This Question is Closed

dinainjune
Best Response
You've already chosen the best response.
0
2a^3>2
a^3>1

dinainjune
Best Response
You've already chosen the best response.
0
a>1

s66821
Best Response
You've already chosen the best response.
0
but answer on the solution book is a<1..... and i don't know y...

dinainjune
Best Response
You've already chosen the best response.
0
oh, hmm i actually forget too about this square root. i'll try to ask that

s66821
Best Response
You've already chosen the best response.
0
thx;]

Akshay_Budhkar
Best Response
You've already chosen the best response.
1
a^3>1 is implying a<1 and not greater than.. you can verify it by putting the values of positive integers..

dinainjune
Best Response
You've already chosen the best response.
0
akshay can you help me to explain what is values of positive integers?

s66821
Best Response
You've already chosen the best response.
0
may be there's sth wrong on the solution bk,,,i'll ask my teacher tmr,,,,,thx...

dinainjune
Best Response
You've already chosen the best response.
0
okay, your welcome :)
anyway, you can see the answer in my question too

s66821
Best Response
You've already chosen the best response.
0
ya ,i'll

Akshay_Budhkar
Best Response
You've already chosen the best response.
1
for positive integers it is the other wway round.. the sign doesn't change for positive cubes.
you can verify it again :)