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Let f:R→R be defined asf(x)=⎧⎨⎩−55x,if x<−52x3−3x2−120x,if −5≤x≤42x3−3x2−36x−336,if x>4Let A={x∈R:f is increasing}. Then A is equal to

Answer»

Let f:R→R be defined as

f(x)=⎧⎨⎩−55x,if x<−52x3−3x2−120x,if −5≤x≤42x3−3x2−36x−336,if x>4



Let A={x∈R:f is increasing}. Then A is equal to




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