# Find the Derivative – d/dx f(x)=1-3x^2

Differentiate.
By the Sum Rule, the derivative of with respect to is .
Since is constant with respect to , the derivative of with respect to is .
Evaluate .
Since is constant with respect to , the derivative of with respect to is .
Differentiate using the Power Rule which states that is where .
Multiply by .
Subtract from .
Find the Derivative – d/dx f(x)=1-3x^2

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