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Find the intervals in which the function...

Find the intervals in which the function `f(x) = sin x +cos x,x in [0, 2pi]` is
(i) strictly increasing, (ii) strictly decreasing.

Text Solution

Verified by Experts

Given
`f(x)=sinx+cosx`
Differentiating w.r.t `x` we get
`f'(x)=cosx-sinx`
...
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NCERT-APPLICATION OF DERIVATIVES-EXERCISE 6.1
  1. Find the intervals in which the function f(x) = sin x +cos x,x in [0, ...

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  2. The total revenue in Rupees received from the sale of x units of a pr...

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  3. A balloon, which always remains spherical, has a variable diameter 3/...

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  4. The radius of an air bubble is increasing at the rate of 1/2c m//s. A...

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  5. A particle moves along the curve 6y = x^(3)+2. Find the points on th...

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  6. A ladder 5 m long is leaning against a wall. The bottom of the ladder...

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  7. The rate of change of the area of a circle with respect to its radius...

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  8. The total revenue in Rupees received from the sale of x units of a pr...

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  9. The total cost C (x) in Rupees associated with the production of x un...

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  10. Sand is pouring from a pipe at the rate of 12 c m^3//s. The falling sa...

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  11. An edge of a variable cube is increasing at the rate of 3 cm/s. How f...

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  12. A stone is dropped into a quiet lake and waves move in circles at the ...

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  13. The radius of a circle is increasing at the rate of 0.7 cm/s. What is...

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  14. The length x of a rectangle is decreasing at the rate of 5 cm/minute ...

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  15. Find the rate of change of the area of a circle with respect to its r...

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  16. The volume of a cube is increasing at the rate of 8 cm^3//s. How fast...

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  17. The radius of a circle is increasing uniformly at the rate of 3 cm/s....

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  18. A balloon, which always remains spherical on inflation, is being infl...

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  19. A balloon, which always remains spherical, has a variable radius. Fin...

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