Math, asked by ishaagrawal3019, 11 months ago

अवकलज का प्रयोग करके निम्नलिखित में से प्रत्येक का सन्निकट मान ज्ञात कीजिए;
(a) \frac{17}{81}^{1}{4} (b) (33)^-\frac{1}{5}

Answers

Answered by amitnrw
0

Given :  (\frac{17}{81} )^\frac{1}{4}  ,   33^\frac{-1}{5}

To find :  प्रत्येक का सन्निकट मान

Solution:

f(x)  =    (\frac{17}{81} )^\frac{1}{4}  = (\frac{17}{3^4} )^\frac{1}{4} =  \frac{ (  17  )^\frac{1}{4}}{3}

f(x) = x^\frac{1}{4}

17 = 16 + 1

x = 16  Δx = 1

f'(x)  = \frac{1}{4} x^\frac{-3}{4}

f(x + Δx ) = f(x) + f'(x) Δx

=> f(17) = f(16)  + f'(16) 1

f(16)   = 2

f'(16)  = 1/32

f(17) = 2 + 1/32

=> f(17) = 65/32

f(17)/3 = 65/96 = 0.677

(17/81)^(1/4)  = 0.677

33^(-1/5)

f(x) = x^(-1/5)

=> f'(x) = (-1/5) x^(-6/5)

f(x + Δx)  = f(x) + f'(x)Δx

x = 32  Δx = 1

f(32) = 1/2

f'(32) = -1/320

1/2 - 1/320

= 159/320

= .496875‬

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