Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

Show that f(x) = 2x + sin(x) + cos(x) increases for all x belongs to R ! Please help !

Show that f(x) = 2x + sin(x) + cos(x) increases for all x belongs to R !


 


Please help !

Grade:12

1 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

d/(f(x)/dt=2+cosx-sinx,minimum of d(f(x))/dt is greater than zero for all real x because cosx-sinx is such that (cosx,sinx)=(-1,1) is impossible and -1=<(cosx,sinx)=<1

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free

10th iCAT Scholarship Test Registration Form