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$2.$ $3$ Evaluate $\int |x^{2}-2x|dx$ $1$ $3.$ $f\left(x\right)=\left(\dfrac {x^{2-1}} {x-1}$ $k$ when $x≠1$ If the function when $x=1$ is given to be continuous at $tx=1$ then the value of $k$ is
Physics
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Qanda teacher - VIKAS
Definition. Cetane number (or CN) is an inverse function of a fuel's ignition delay, the time period between the start of ignition and the first identifiable pressure increase during combustion of the fuel.