Expert Math Class 12 Level 1

If f(x)=5x+4 and g(x)=6x+-3, what is (f∘g)(4)?

यदि f(x)=5x+4 और g(x)=6x+-3, तो (f∘g)(4) का मान क्या है?

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Correct Answer

B. 109

Explanation

Step 1: Identify the concept: composition of functions. Step 2: First find g(4)=21. Then f(21)=109. Step 3: Exam tip: In composition, the function on the right acts first.

Step 1: अवधारणा composition of functions है। Step 2: पहले g(4)=21 निकालते हैं। फिर f(21)=109 मिलता है। Step 3: याद रखें: Composition में right side वाला function पहले लगता है।

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