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Find the Intervals in Which the Following Functions Are Strictly Increasing Or Decreasing: X2 + 2x − 5

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प्रश्न

Find the intervals in which the following functions are strictly increasing or decreasing:

x2 + 2x − 5

योग
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उत्तर

We have f (x) = x2 + 2x - 5 

f (x) is being a polynomial is continuous and derivale on R.

Differentiating w.r.t.x, we get

For increasing, f (x) >0

= 2x + 2 >0

= x > -1

For decreasing f (x) < 0

= 2x + 2 <0

= x < -1

f (x) is strictly decreasing for x <-1

f (x) is strictly increasing for x > -1

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Application of Derivatives - Exercise 6.2 [पृष्ठ २०५]

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एनसीईआरटी Mathematics Part 1 and 2 [English] Class 12
अध्याय 6 Application of Derivatives
Exercise 6.2 | Q 6.1 | पृष्ठ २०५

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