Hey! I am studying in grade 10th and have a passion for maths and science.As its vacation right now I decided to read 11th grade maths book and made a start with Differential calculus. I reached the topic successive differentiation reagarding which I have a doubt. It says the second derivative is written as \frac{d}{dx} \times \frac{dy}{dx} = \frac{d^{2}y}{dx^{2}} .So, according to it what I understand is that the derivative of \frac{dy}{dx} is \frac{d^{2}y}{dx^{2}} . Am I right ?? and if not how can you right \frac{dy}{dx} as \frac{d^{2}y}{dx^{2}} ?? Hope to clarify my doubt. Pranjal

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