यदि \( f: R \rightarrow R \) एक फलन है जो \( f(x)=3 x+7 \) द्वारा परिभाषित है, तो \( f^{-1}(-2) ...

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यदि \( f: R \rightarrow R \) एक फलन है जो \( f(x)=3 x+7 \) द्वारा परिभाषित है, तो \( f^{-1}(-2) \) ज्ञात कीजिए।
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