What are the important formulas in Class 12 NCERT Continuity and Differentiability?

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a year ago

There are several important formulas of the Continuity and Differentiability, Students can cheeck below;

  1. Continuity at a point
    lim?x?a?f(x)=lim?x?a+f(x)=f(a)\lim_{x \to a^-} f(x) = \lim_{x \to a^+} f(x) = f(a)

  2. Derivative of basic functions:

    • ddx(xn)=nxn?1\frac{d}{dx}(x^n) = nx^{n-1}

    • ddx(sin?x)=cos?x\frac{d}{dx}(\sin x) = \cos x

    • ddx(cos?x)=?sin?x\frac{d}{dx}(\cos x) = -\sin x

    • ddx(ex)=ex\frac{d}{dx}(e^x) = e^x

    • ddx(ln?x)=1x\frac{d}{dx}(\ln x) = \frac{1}{x}

  3. Product Rule:
    ddx[u?v]=u?dvdx+v?dudx\frac{d}{dx}[u \cdot v] = u \cdot \frac{dv}{dx} + v \cdot \frac{du}{dx}

  4. Quotient

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