Math shortcuts, Articles, worksheets, Exam tips, Question, Answers, FSc, BSc, MSc

Keep Connect with Us

• =

• Welcome in Math School.
• This is beta verion of our website.

Give the function whose 2nd derivative is equal to function itself ...?

____________________________________

```    sinh x, cosh x  both
```
Explanation
```First take sinh x
d
First derivative of sinh x = --- sinh x = cosh x
dx
d
Second derivative sinh x   = --- cosh x = sin h x
dx
```

Therefore second derivative of sinh x is sinh x (itself).

```Now take cosh x
d
First derivative of cosh x  = --- cosh x = sinh x
dx
d
Second derivative cosh x    = --- sinh x = cosh x
dx
```

Therefore second derivative of cosh x is cosh x (itself).

____________________________________

dffffffffffffffffffff

SHORTCUT TRICKS (Division)
• Divisible by 2 Shortcut trick
• Divisible by 3 Shortcut trick
• Divisible by 4 Shortcut trick
• Divisible by 5 Shortcut trick
• Divisible by 6 Shortcut trick
• Divisible by 7 Shortcut trick
• Divisible by 8 Shortcut trick
• Divisible by 9 Shortcut trick
• Divisible by 10 Shortcut trick