 Hi and welcome to the session, I am Deepika here. Let's discuss the question differentiate cos root x with respect to x. So let's start the solution. Let y is equal to cos of root x. Therefore dy by dx is equal to, now derivative of cos x is minus sin x, so this is minus sin root x into derivative of root x. So this is equal to minus sin root x into derivative of root x is 1 by 2 root x. So this is equal to minus sin root x upon 2 root x. Hence we have differentiate our even function and our answer is minus sin root x upon 2 root x. I hope the question is clear to you. Bye and have a nice day.