Question

when looking at a graph how do you know at which numbers c is f continuous but not differentiable?
..screen shot will b attached in a min

Answer 1

picture of graph attached

Answer 2

look for sharp points and vertical tangents

Answer 3

its discontias at x=6 but wen im confused....is it x=4 or -4...or some other value

Answer 4

4

Answer 5

y is it not -4?

Answer 6

looks like the derivative is about zero at x=-4

Answer 7

btw wen u say look for sharp points n vertical tangents...this will show wen a line continuos but not differentiable?

Answer 8

it will show when a continuous function is not differentiable

Answer 9

may i link anotehr question 2 u?

Answer 10

http://openstudy.com/users/sabrina446#/users/sabrina446/updates/4e977a3d0b8bedaecf45a290