Mathematics, 16.04.2020 23:30 shymitch32
Find the arc length for the curve y = 5 x 2 − 1 40 ln x taking P 0 ( 1 , 5 ) as the starting point. If f ( x ) = 5 x 2 − 1 40 ln x , then f ' ( x ) = 1 + [ f ' ( x ) ] 2 = 1 + ( ) 2 = 1 + 100 x 2 − 0.5 + = 100 x 2 + 0.5 + ( ) 2 √ 1 + [ f ' ( x ) ] 2 = . Thus the arc length is given by s ( x ) = ∫ x 1 √ 1 + [ f ' ( t ) ] 2 d t = ∫ x 1 ( ) d t = [ ] x 1 = . For instance, the arc length along the curve from ( 1 , 5 ) to ( 5 , ) is s ( 5 ) = + 1 40 ln 5 − 5 = + ln 5 40 ≈ (rounded to four decimal places).
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Find the arc length for the curve y = 5 x 2 − 1 40 ln x taking P 0 ( 1 , 5 ) as the starting point....
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