WBJEE · Maths · Application of Derivatives
The function \(f(x)=a x+b\) is strictly increasing for all real \(x\) if
- A a \( > 0\)
- B a \( < 0\)
- C \(a=0\)
- D \(\mathrm{a} \leq 0\)
Answer & Solution
Correct Answer
(A) a \( > 0\)
Step-by-step Solution
Detailed explanation
Hints : \(f^{\prime}(x)=a\) \(f^{\prime}(x) > 0 \Rightarrow a > 0\)
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