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statuscvo [17]
3 years ago
11

Help !!!See question in image.Please show workings .​​

Mathematics
1 answer:
Kamila [148]3 years ago
4 0

Answer:

gradient = 9

Step-by-step explanation:

The gradient of the tangent at x = a is the derivative \frac{dy}{dx}

Differentiate using the power rule on each term

\frac{d}{dx} (ax^{n} ) = nax^{n-1} and \frac{d}{dx} ( constant ) = 0

y = 2x² + 5x - 3

\frac{dy}{dx} = 2.2x^{2-1} + 5x^{1-1} - 0

    = 4x + 5

\frac{dy}{dx} ( x = 1 ) = 4(1) + 5 = 4 + 5 = 9 ← gradient of tangent

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