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MarieMa
@MarieMa
July 2022
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найдите производную
1) f(x)= 1 / |x| f(-2)=?
2) f(x)=(x+4)^2 / x-3
3) f(x)=x^2-2/ x^2 + 2 f'(2)=?
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nKrynka
Решение
1) f(x)= 1 / |x| f(-2)=?
f`(x) = - 1/x² ; f(-2) = 1/2
2) f(x)=(x+4)^2 / (x-3)
f`(x) = [2*(x+4)*(x - 3) - (x+4)²]/x²
3) f(x)=(x^2-2)/( x^2 + 2) f'(2)=?
f`(x) = [2x*(x²+2) - 2x*(x² - 2]/x⁴ = 8x / x⁴ = 8/x³
f`(2) = 8 / 2³ = 1
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Answers & Comments
1) f(x)= 1 / |x| f(-2)=?
f`(x) = - 1/x² ; f(-2) = 1/2
2) f(x)=(x+4)^2 / (x-3)
f`(x) = [2*(x+4)*(x - 3) - (x+4)²]/x²
3) f(x)=(x^2-2)/( x^2 + 2) f'(2)=?
f`(x) = [2x*(x²+2) - 2x*(x² - 2]/x⁴ = 8x / x⁴ = 8/x³
f`(2) = 8 / 2³ = 1