mathsgreedy
New member
- Joined
- Apr 12, 2017
- Messages
- 2
for
ax^2 + bx if x<-1,
3 if x=-1,
x^3 -cx if x>-1.
for what values of a, b and c will f be differentiable at x=-1?
I understand that I must equate the limits and have found that c must equal 4. However, I am completely lost for ideas on how to find a and b because they seem to cancel out and not give an answer so I must be doing something incorrectly. I have been working on this for days for an assignment due tomorrow and am out of ideas. Any help would be appreciated. Thank you in advance.
ax^2 + bx if x<-1,
3 if x=-1,
x^3 -cx if x>-1.
for what values of a, b and c will f be differentiable at x=-1?
I understand that I must equate the limits and have found that c must equal 4. However, I am completely lost for ideas on how to find a and b because they seem to cancel out and not give an answer so I must be doing something incorrectly. I have been working on this for days for an assignment due tomorrow and am out of ideas. Any help would be appreciated. Thank you in advance.