Question

In how many points does the curve y=x3 , cut x-axis? plz I am in exam plz tell me it's urgent I dont have time
​

Answer 1

Answer:

x=±  

3

​

 

​

 

1

​

,y=  

3

​

 

1

​

.  

3

​

 

​

 

1

​

.

Step-by-step explanation:

Hence slope of tangents

=tan60  

0

 

=  

3

​

 

=  

dx

dy

​

 

Hence

dx

dy

​

 

=3x  

2

 

=  

3

​

 

Or  

x  

2

=  

3

​

 

1

​

 

Hence

x=±  

3

​

 

​

 

1

​

.

Thus y

=  

3

​

 

1

​

.  

3

​

 

​

 

1

​

.