Answer to Question #273856 in Calculus for Annah

Question #273856

Find the derivative of the following

1.y= (2x²+6)⁵

2. y=(5x-1/2x+3)³
      

3.g(x)=3xe3x

4. y=ecosx



1
Expert's answer
2021-12-01T17:37:43-0500

1) "\\big((2x^2+6)^5\\big)^\\prime =5\\cdot (2x^2+6)^4\\cdot (2x^2+6)^\\prime =5\\cdot (2x^2+6)^4\\cdot 4x=20x(2x^2+6)^4"


2) "\\bigg(\\big(\\frac{5x-1}{2x+3}\\big)^3\\bigg)^\\prime =3\\cdot \\big(\\frac{5x-1}{2x+3}\\big)^2 \\cdot \n\\big(\\frac{5x-1}{2x+3}\\big)^\\prime= 3\\cdot \\big(\\frac{5x-1}{2x+3}\\big)^2 \\cdot \n\\frac{5(2x+3)-2(5x-1)}{(2x+3)^2}=51\\cdot \\frac{(5x-1)^2}{(2x+3)^4}"


3) "(3xe^{3x})^\\prime =(3x)^\\prime \\cdot e^{3x}+3x\\cdot (e^{3x})^\\prime =3e^{3x}+3x\\cdot e^{3x}\\cdot3=9xe^{3x}+3e^{3x}"


4) "(e^{cos x})^\\prime =e^{cos x}\\cdot (\\cos x)^\\prime=-\\sin x \\cdot e^{\\cos x}"


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