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Integrate (sin(2x) + e^(2x+3))dx

1/2cos(2x) +1/2e^(2x+3) + C
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Answered by Hazel T. • Maths tutor
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Asha and Lucy sell pencils. Asha sold 7 boxes, and 22 singles. Lucy sold 5 boxes, and 2 singles. Given Asha sells twice as many pencils as Lucy, work out how many questions are in each box.

Asha: 7 boxes, 22 singlesLucy: 5 boxes, 2 singlesAsha, 2x as many as Lucy A = 2(5b +2) = 10b + 4L= 5b + 210b+4=7b+223b=18b=6
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Answered by Tara E. • Maths tutor
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How to evaluate the atavistic form explanation for offending.

First of all, the word evaluate is used within exam questions to highlight the strengths and weaknesses of the explanation. Attempt to define the atavistic form, but consider that the question doesn’t ask fo...
Answered by • Psychology tutor
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For a graph C with equation y=3/(5-3x)^2, find the the equation of the line normal to the graph at point P, where x=2. Give your answer in the form ax+by+c=0

Find out the value of the y coordinate where x=2y=3/(5-3(2))^2=3Differentiate function in order to find the gradient of the graph at point Py=3/(5-3x)^-2Use chain rule where u=5-3xdu/dx=-3dy/dx=3u^-2Hence dy...
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Answered by Jazib I. • Maths tutor
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How does a acid buffer work?

For example CH3COOH buffer Buffer is in equilibrium like this - CH3COOH = CH3COO- + H+When a little bit of Acid (H+) is added equilibrium shifts left (as equilibrium shifts in the opposite direction when the...
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Answered by Emily R. • Chemistry tutor
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