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`        How can i calculate (d2y/dx2) of any function y=f(x)`
7 years ago

147 Points
```										Dear Chandrakesh
meaning of d2y/dx2  is
d2y/dx2  = d/dx (dy/dx)

for example we have a function  y =  x4 + 20x2
now we need to find out d2y/dx2
first find out dy/dx
so dy/dx = 4x3 + 40x
now for d2y/dx2  differentiate the dy/dx again
so  d2y/dx2 = d/dx ( 4x3 + 40x)
= 12x2 +40

Please feel free to post as many doubts on our discussion forum as you can.If you find any question Difficult to understand - post it here and we will get you the answer and detailed  solution very  quickly. We are all IITians and here to help you in your IIT JEE preparation.All the best. Regards,Askiitians ExpertsBadiuddin

```
7 years ago
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