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Maths
A Level

differentiate with respect to x : y = x^2 -5x

to find dy/dx, multiply each item by the power of the x, and then decrease the power of the x by 1.Step 1 : 2x^2 -15x (multiplying by power of x)Step 2 : 2x^1 -15x^0Therefore:dy/dx = 2x ...

BA
Answered by Branwen A. Maths tutor
3559 Views

Use implicit differentiation to find dy/dx of the equation 3y^2 + 2^x + 9xy = sin(y).

Differentiating each term separately, and using implicit differentiation to differentiate the functions of y by differentiating with respect to y and multiplying by dy/dx, we can obtain 6ydy/dx + ln2<...

LS
Answered by Luke S. Maths tutor
6102 Views

Differentiante y = arctan(c)

y = arctan(x)tan(y) = xsec2(y) = dx/dyfrom cos2A + sin2A = 1, we know that 1 + tan2A = sec2A (divide by cos2A), so we substitute in1 + tan...

SS
Answered by Savvas S. Maths tutor
2688 Views

Integrate ∫sin²xcosxdx

This indefinite integral (has no defined limits) should be evaluated by integration by substitution This is because you cannot integrate sin2xWhen doing integration by substitu...

RK
Answered by Rachel K. Maths tutor
7136 Views

Integrate sec^2(x)tan(X)dx

This can be done with integration by substitution. If we let u=tanx then du/dx=sec^2(X). If we substitute U into the integrand we get it being u(sec^2(X))dx. rearranging the du/dx equation to make dx the ...

AZ
Answered by Amin Z. Maths tutor
20624 Views

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