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Ta có \(y'=e^{\sqrt[3]{x^2+1}-x}\left(\sqrt[3]{x^2+1}-x\right)+3^{3x-1}\left(3x-1\right)'\ln3\)
\(=e^{\sqrt[3]{x^2+1}-x}\left(\frac{2x}{3\sqrt[3]{\left(x^2+1\right)^2}}-1\right)+3^{3x}\ln3\)
1.
\(y'=\left(\dfrac{x}{lnx}\right)'.3^{\dfrac{x}{lnx}}.ln3=\dfrac{lnx-1}{ln^2x}.3^{\dfrac{x}{lnx}}.ln3\)
2.
\(y'=\left(tanx\right)'.tanx+\left(tanx\right)'.\dfrac{1}{tanx}=\dfrac{tanx}{cos^2x}+\dfrac{1}{tanx.cos^2x}\)
3.
\(y=\left(ln2x\right)^{\dfrac{2}{3}}\Rightarrow y'=\left(ln2x\right)'.\dfrac{2}{3}.\left(ln2x\right)^{-\dfrac{1}{3}}=\dfrac{1}{3x\sqrt[3]{ln2x}}\)
a.
\(y'=\dfrac{\left(1+\sqrt{3x-1}\right)'}{1+\sqrt{3x-1}}=\dfrac{3}{2\left(1+\sqrt{3x-1}\right)\sqrt{3x-1}}\)
b.
\(y'=\dfrac{\left(2sin^2x-1\right)'}{\left(2sin^2x-1\right).ln10}=\dfrac{2sin2x}{\left(2sin^2x-1\right)ln10}\)
c.
\(y'=\left(3x^2+3\right)3^{x^3+3x+1}.e^x.ln3+3^{x^3+3x+1}.e^x\)
Ta có : \(y'=\frac{\left(2x^3+1\right)'}{5\sqrt[5]{\left(2x^3+1\right)^4}}=\frac{6x^2}{5\sqrt[5]{\left(2x^3+1\right)^4}}\)
Ta có :
\(y'=\frac{\left(2x^3+1\right)'}{5\sqrt[5]{\left(2x^3+1\right)^4}}=\frac{6x^2}{5\sqrt[5]{\left(2x^3+1\right)^4}}\)
Ta có \(y=\log_3\left(\frac{x^2-2x+3}{x^2+2x+3}\right)=\log_3\left(x^2-2x+3\right)-\log_3\left(x^2+2x+3\right)\)
\(\Rightarrow y'=\frac{2x-2}{\left(x^2-2x+3\right)\ln3}-\frac{2x-2}{\left(x^2+2x+3\right)\ln3}=\frac{4x^2-12}{\left(x^4+2x^2+9\right)\ln3}\)
\(y=\sqrt{x\sqrt[3]{x\sqrt[4]{x}}}=x^{\frac{1}{2}}.x^{\frac{1}{2}.\frac{1}{3}}.x^{\frac{1}{2}.\frac{1}{3}.\frac{1}{4}}=x^{\frac{17}{24}}\)
\(\Rightarrow y'=\frac{17}{24}.x^{\frac{17}{24}-1}=\frac{17}{24}.x^{\frac{-7}{24}}=\frac{17}{24\sqrt[24]{x^7}}\)
TL:
Tìm đạo hàm của hàm số y = ln(x + √(1+ x^2 )).
-HT-
!!!!!
@Nguyen
Ta có \(y'=\frac{1}{3x\sqrt[3]{\ln}x}\)