ian-h
ian-h
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1.1L * [(100 – p)/100]w = 0.88Lw 110 – 1.1p = 88 p = 22/1.1 = 20 %
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a) Temporarily assume areas are equal, (easier to see), they are each 3 sides of fence with a river forming the other border. Sketch this for yourself. Each area has 2 sides of length x, so 3rd side is 180 - 2x, (if equal areas). Single area…
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You probably meant (1/2)x – y = 1 and xy = 4. If so, substitute y (1/2)x – 4/x = 1, now multiply through by 2x and rearrange x^2 – 2x – 8 = (x + 2)(x – 4) = 0 x = -2 with y = -2 or, x = 4 and y = 1 But if you really meant 1/(2x) – y = 1 an…
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Two Rules you need to do this The Chain rule As an example, x^2 + 1 is a function, so y = (x^2 + 1)^3 is a function of a function The derivative of a function of a function is the derivative of the outer function multiplied by the deriva…
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Two Rules you need to do this The Chain rule As an example, x^2 + 1 is a function, so y = (x^2 + 1)^3 is a function of a function The derivative of a function of a function is the derivative of the outer function multiplied by the deriva…
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Two Rules you need to do this The Chain rule As an example, x^2 + 1 is a function, so y = (x^2 + 1)^3 is a function of a function The derivative of a function of a function is the derivative of the outer function multiplied by the deriva…
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Two Rules you need to do this The Chain rule As an example, x^2 + 1 is a function, so y = (x^2 + 1)^3 is a function of a function The derivative of a function of a function is the derivative of the outer function multiplied by the deriva…
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Two Rules you need to do this The Chain rule As an example, x^2 + 1 is a function, so y = (x^2 + 1)^3 is a function of a function The derivative of a function of a function is the derivative of the outer function multiplied by the deriva…
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You probably meant (1/2)x – y = 1 and xy = 4. If so, substitute y (1/2)x – 4/x = 1, now multiply through by 2x and rearrange x^2 – 2x – 8 = (x + 2)(x – 4) = 0 x = -2 with y = -2 or, x = 4 and y = 1 But if you really meant 1/(2x) – y = 1 an…
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You probably meant (1/2)x – y = 1 and xy = 4. If so, substitute y (1/2)x – 4/x = 1, now multiply through by 2x and rearrange x^2 – 2x – 8 = (x + 2)(x – 4) = 0 x = -2 with y = -2 or, x = 4 and y = 1 But if you really meant 1/(2x) – y = 1 an…