Teaching DSSSB TGT Mock Test 2025 Mathematics Relations and Functions

यदि फलन f (x) = log2 \(\left(\frac{\sin x-\cos x+3 \sqrt{2}}{\sqrt{2}}\right)\) है, तो -

1
f(x) का प्रांत R है।
2
f(x) का प्रांत R - {nπ}, n ∈ I है
3
f(x) का परिसर [1, 2] है।
4
इनमें से कोई नहीं
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