हिंदी

If x = then show thatdydxt+1t-1,y=t-1t+1,then show that y2+dydx = 0.

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प्रश्न

If x = `(t + 1)/(t - 1), y = (t - 1)/(t + 1), "then show that"  y^2 + "dy"/"dx"` = 0.

योग
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उत्तर

x = `("t" + 1)/("t" - 1)` .......(1)

y = `("t" - 1)/("t" + 1)` ......(2)

Multiplying equations (1) and (2)

x × y = `(("t" + 1))/(("t" - 1)) xx (("t" - 1))/(("t" + 1))`

x × y = 1

x = `1/"y"` ....(3)

Differentiating w.r.t. x,

`"x" xx "dy"/"dx" + "y" xx (1) = 0`

`1/"y" xx "dy"/"dx" + "y"/1 = 0` ....[From (3)]

`(1 xx "dy"/"dx" + "y"^2)/"y" = 0`

`"dy"/"dx" + "y"^2 = 0`

∴ `"y"^2 + "dy"/"dx" = 0`

Hence proved.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Differentiation - Exercise 1.4 [पृष्ठ ४८]

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बालभारती Mathematics and Statistics 2 (Arts and Science) [English] Standard 12 Maharashtra State Board
अध्याय 1 Differentiation
Exercise 1.4 | Q 3.3 | पृष्ठ ४८
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